CACI International: Fiscal 2026 Revenue Grew 7.2% Organically With Technology at 58.4% of Mix, and 606.85 USD Sits 6% Above the 570 USD Conservative Ceiling

This distinction changes the valuation conclusion. At 606.85 USD, CACI trades at about 25.1 times fiscal 2026 GAAP diluted EPS, 20.3 times fiscal 2026 adjusted diluted EPS and 18.2 times the midpoint of fiscal 2027 adjusted diluted-EPS guidance. Fiscal 2026 free-cash-flow yield is about 5.5%; against management's fiscal 2027 guidance of at least 900 million USD, the prospective headline FCF yield is about 6.7%. The latter needs normalization because fiscal 2027 FCF guidance includes approximately 115 million USD of cash-tax benefit associated with Section 174A changes and a 40 million USD delayed tax refund.

The cash conversion behind the business is better than GAAP EPS alone suggests. Across fiscal 2022 through fiscal 2026, cumulative GAAP operating cash flow was about 1.39 times cumulative GAAP net income; even excluding CACI's receivables-purchase effect, the ratio was approximately 1.32 times. Cumulative free cash flow after all capital expenditure and excluding that receivables arrangement was about 1.15 times cumulative GAAP net income. This is not an earnings story supported primarily by accounting accruals. Cash conversion has nevertheless been volatile, particularly in fiscal 2023 and fiscal 2024 as working capital moved against the company.

The backlog picture is nuanced in the same way. At June 30, 2026, total backlog was 32.0 billion USD, up only 1.9% year over year, while funded backlog was 5.4 billion USD, up 28.6%. Fiscal 2026 awards were about 10.2 billion USD, for a trailing book-to-bill ratio of 1.1 times. The stronger funded component is useful because funded backlog represents appropriated amounts on existing contracts less revenue already recognized. The much larger unfunded backlog includes contractual work awaiting future appropriations and unexercised options; it is visibility, not cash in the bank. Multi-award IDIQ ceiling values are excluded from awards and backlog until CACI actually receives task orders, which is why enormous vehicle ceilings such as the 151 billion USD SHIELD IDIQ should never be treated as CACI revenue opportunity already won.

Near-term revenue visibility is unusually good for a contractor. Management says 83% of expected fiscal 2027 revenue comes from existing business, 9% from recompetes and only 8% from new business. It characterizes its recompete win rate as “high” but does not disclose a numerical percentage. Submitted bids totaled about 11 billion USD, roughly 75% for new business, while bids expected over the following two quarters totaled about 22 billion USD, roughly 80% for new business. Trailing awards had a weighted average duration of about six years.

The important bull/bear disagreement sits one level below the obvious defense-budget narrative. Bulls see organic growth of 7%-plus, a rising technology mix, improving margins, strong funded backlog and a proven ability to buy differentiated technologies, deleverage and repeat. Bears see a company that paid 2.6 billion USD for an asset guided at announcement to roughly 650 million USD of revenue and 145 million to 150 million USD of EBITDA in its first twelve months, or about 17 to 18 times forward EBITDA, took pro-forma leverage to 3.7 times, carries more than 8.5 billion USD of goodwill and acquired intangibles, and then re-rated sharply after a single exceptional quarter. Both sides can point to hard evidence.

The market's change of mind has been fast. CACI closed at 463.26 USD on June 30, 2026. The 606.85 USD September 9 close is roughly 31% higher. On August 6, after CACI reported fourth-quarter fiscal 2026 adjusted diluted EPS of 8.91 USD versus a FactSet expectation cited by Investor's Business Daily of 7.39 USD, and 11.6% organic revenue growth, the shares rose more than 21%. Earlier in calendar 2026 the stock had fallen sharply despite strong operating results as software and consulting names were repriced and investors worried about federal contracting and AI disruption.

Qualitative portrait: company in transition. CACI already has the financial profile of a good government contractor, but it is still proving that its acquisition-funded shift toward higher-value national-security technology can sustain higher organic growth and margins after leverage normalizes. The strongest evidence favors a successful transition so far; the current valuation now assumes a meaningful part of that success continues.

Company vertical history and financial review

CACI began in 1962 in Santa Monica, California as a simulation-technology company. Founders Herb Karr and Harry Markowitz came out of the RAND environment and built the company around SIMSCRIPT, a simulation programming language. CACI's corporate history records a 30,000 USD IBM contract in 1964 to develop SIMSCRIPT I.5. That origin matters more than the usual corporate-history trivia: the company began by writing specialized software for difficult analytical problems, not by supplying commodity labor to Washington. Government services became much larger over time, but software and simulation were there first.

The company went public in August 1968. The current parent, CACI International Inc, was incorporated in Delaware on October 8, 1985 as the corporate structure evolved. Modern filings register one class of common stock under the ticker CACI on the New York Stock Exchange. CACI's current investor FAQ confirms the August 1968 IPO, but the accessible modern corporate archive I reviewed does not provide a primary record of the original offer price, amount raised or the exact historical migration path among trading venues. Rather than infer those details from later market databases, I treat them as an unresolved historical-data point.

The development arc can be divided more usefully into five business stages than into dozens of acquisition dates.

The first, from 1962 through the early 1980s, was software commercialization and technical services. The company moved from a simulation language into a broader set of computer and analytical services as federal agencies became larger users of computing. It established a British operation in 1975, an early sign that the eventual model would combine proprietary capability with customer-specific technical work.

The second stage began when Jack London became the central leader in the 1980s. CACI evolved into a scaled federal technology-and-services contractor through organic expansion and repeated acquisitions. The lasting contribution of this era was institutional rather than a single product: customer relationships, contract vehicles, security-cleared talent and a repeatable acquisition model. Modern CACI is still built on that substrate. The historical leverage chart in CACI's fiscal 2026 presentation shows repeated acquisition-driven increases in leverage followed by deleveraging, including transactions associated with Six3 Systems, L-3's National Security Solutions business, LGS Innovations, Mastodon, SA Photonics and ID Technologies.

The third stage, roughly the 2010s, turned that scale toward more concentrated national-security missions. CACI increasingly emphasized intelligence, cyber, communications and mission support rather than generic commercial IT. This made federal budget exposure more concentrated, but it also put the portfolio closer to programs that Congress tends to protect because they relate directly to intelligence, military readiness and classified missions. Today's fiscal 2026 customer mix, with 78.2% of revenue from defense and intelligence combined, is the result.

The fourth stage began before John Mengucci became chief executive in July 2019 but accelerated under him. Mengucci joined CACI in 2012 after a 27-year Lockheed Martin career and served as CACI's chief operating officer before becoming CEO. Under his tenure the strategic vocabulary shifted toward differentiated technology, investing ahead of customer requirements and free-cash-flow growth per share. Acquisitions became a way to buy technology positions rather than merely add contract revenue. The leverage history shows LGS Innovations and Mastodon around 2019–20, SA Photonics and ID Technologies around 2021–22, then another decline in leverage as cash generation caught up.

The fifth stage began in fiscal 2025 and is still underway. It is the most aggressive portfolio transformation in CACI's modern history. Applied Insight added cloud migration and cloud engineering; Azure Summit added radio-frequency and electromagnetic-spectrum technology; Identity E2E added U.K. biometrics and cloud capability; ARKA then added space-based sensing and geospatial intelligence. Datalynx, a much smaller fiscal 2026 transaction, added data and cloud migration capability.

Recent acquisition disclosure is summarized below. Dollar values are purchase consideration net of cash acquired where the filing gives that measure.

The fiscal 2025 10-K names Cyber-Duck and Rowe IT in the broader corporate acquisition record, but its accounting note aggregates all three fiscal 2024 transactions at 108.6 million USD rather than providing reliable individual purchase prices for every deal. I do not manufacture a transaction-level split. Fiscal 2025's initially disclosed individual purchase considerations also sum slightly differently from the later finalized aggregate because purchase-accounting measurement adjustments continued after closing.

Azure was already a large bet. CACI's fiscal 2025 audit identified the valuation of a technology intangible acquired with Azure as a critical audit matter because the fair value required significant assumptions about royalties, discount rates and long-run cash flows. CACI ultimately allocated approximately 581.4 million USD of Azure's purchase price to goodwill and 635.0 million USD to intangible assets. Most of the transaction's value rested on expected future customer relationships and technology rather than tangible assets. Reuters reported that the stock rose 3.5% on the September 2024 announcement, reflecting investors' willingness at the time to reward this move deeper into electronic warfare.

ARKA pushed that logic considerably further. The preliminary fiscal 2026 purchase accounting assigned approximately 1.463 billion USD to goodwill and 1.145 billion USD to acquired intangible assets against 2.643 billion USD of net purchase consideration. Nearly the entire economic purchase price rests on future earnings from customer relationships, developed technology and the assembled enterprise. The deal is not bad on that account. It does mean future cash flow is the test that matters.

The acquisition history also explains why CACI's reported EPS increasingly understates the cash earnings management wants investors to focus on. Acquired technology and customer relationships are amortized through GAAP income even though the related cash purchase price was paid when the acquisition closed. That is a legitimate reason to examine adjusted EPS. It is equally legitimate to remember that the economic cost of acquiring those assets was very real and financed substantially with debt. The right analytical response is to use both GAAP and cash-flow measures rather than declaring one “real” and the other irrelevant.

The long financial record shows a company whose quality improved gradually before ARKA.

† CACI non-GAAP free cash flow: operating cash flow excluding MARPA less capital expenditure. Annual figures are fiscal years ending June 30.

Fiscal 2021-to-fiscal 2026 revenue compounded at roughly 9.6% annually. The path matters. Fiscal 2022 reported revenue growth was only 2.6%, followed by approximately 8.1% in fiscal 2023, 14.3% in fiscal 2024, 12.6% in fiscal 2025 and 10.9% in fiscal 2026. The later rates contain acquisitions; fiscal 2026 organic growth was 7.2%, not 10.9%. The underlying business nevertheless accelerated materially from the early part of the period.

Margins tell an even more useful story. EBITDA margin bottomed near 10.3% in fiscal 2022 and reached 12.3% in fiscal 2026. Management attributes the recent gain mainly to execution and mix, with only about 10 basis points of fiscal 2026 margin attributable to a small U.K. divestiture gain. Technology and fixed-price content increased at the same time. That is consistent with a portfolio that is becoming less dependent on cost-plus labor economics.

Cash flow was not a straight line. CACI generated 695 million USD of free cash flow in fiscal 2022, only 282 million USD in fiscal 2023, 384 million USD in fiscal 2024, 442 million USD in fiscal 2025 and 735 million USD in fiscal 2026. Accounts receivable and timing of federal payments create meaningful annual working-capital swings. Over five years, however, the accumulated cash conversion is strong enough to reject the idea that earnings growth has been funded primarily by aggressive accrual accounting.

Capital intensity was historically low. Fiscal 2021–fiscal 2025 capital expenditure stayed in a narrow range around 64–75 million USD annually before rising to 106.7 million USD in fiscal 2026; management guides to about 115 million USD in fiscal 2027. The jump corresponds with a portfolio that now includes more physical technology, manufacturing, sensors and electronics. CACI's August 2026 opening of a defense-electronics manufacturing center in Rochester is another sign that “technology” increasingly includes hardware-enabled products rather than only software.

The balance-sheet transition is more dramatic than the income statement. At June 30, 2026, cash was 191.8 million USD, accounts receivable approximately 1.71 billion USD, goodwill approximately 6.48 billion USD and acquired intangible assets about 2.07 billion USD. Goodwill plus acquired intangibles therefore represented more than 8.5 billion USD, roughly 72% of total assets and almost twice book equity. This does not create a near-term liquidity problem, but it raises the consequence of M&A misjudgment: a future impairment would be noncash at the date of recognition, yet it would reveal that cash spent in earlier acquisitions did not earn the expected return.

Debt principal at the same date was approximately 4.93 billion USD. The stack included roughly 1.23 billion USD under a term facility, 660 million USD drawn on the revolving facility, approximately 739 million USD of the 2024 Term Loan B, 798 million USD of the ARKA-related Term Loan B-2 and 1.5 billion USD of 6.375% senior unsecured notes. CACI had substantial undrawn revolving capacity, and part of its floating-rate exposure was hedged. A one-percentage-point change in unhedged floating rates would affect annual interest by approximately 15 million USD according to the filing.

The capital-allocation sequence is easy to read. Fiscal 2025 common-stock repurchases used about 168.6 million USD. Fiscal 2026 repurchases fell to approximately 17.1 million USD as acquisition funding displaced buybacks. CACI has never paid a cash dividend and says it currently does not intend to start one. The 2023 repurchase authorization still gives flexibility, but management's explicit low-3-times leverage objective makes debt reduction the dominant near-term destination for free cash flow.

The vertical evidence says CACI's proven capability is buying capability, embedding it in a federal contract machine and historically paying leverage back down, not simply buying companies. ARKA is the largest test yet of whether that playbook still scales.

Governance does not add a control discount. The fiscal 2026 proxy shows no controlling owner. BlackRock held 8.9% of common stock, Vanguard 5.2% and Morgan Stanley 5.2% as reported from their respective regulatory filings. Directors and executive officers as a group beneficially owned about 212,000 shares against roughly 22.1 million common shares outstanding, or just under 1%. CEO John Mengucci beneficially owned about 150,000 shares.

The current capital structure has one publicly traded common class. At the August 21, 2026 proxy record date, approximately 22.10 million common shares were outstanding. The charter also authorizes preferred shares, but none were outstanding; the fiscal 2026 balance-sheet disclosure shows 80 million authorized common shares and 10 million authorized preferred shares. There is no current dual-class voting structure hiding behind the data-vendor “Class A” description.

Stock compensation was approximately 79.5 million USD in fiscal 2026 versus about 60.2 million USD in fiscal 2025. That is worth monitoring, but historical repurchases have kept the diluted share count broadly controlled; fiscal 2026 diluted shares were lower year over year in several quarters because of fiscal 2025 repurchases. The larger capital-allocation issue is debt-financed M&A, not employee dilution.

I found no qualified audit opinion or accounting restatement in the latest annual reporting. CACI does have the long-running Al Shimari litigation connected with alleged detainee abuse at Abu Ghraib. The Fourth Circuit affirmed a 42 million USD jury verdict in March 2026, then on August 28, 2026 reversed and remanded the case for dismissal after the Supreme Court's Cisco Systems v. Doe ruling removed the Alien Tort Statute cause of action the claims rested on. It remains a legitimate legal and reputational matter, but the latest filing does not present it as a balance-sheet threat comparable in magnitude with ARKA execution or federal-funding risk.

Business model moat industry and cycle

CACI legally reports Domestic and International operations as accounting segments, but the more useful investor classification is Technology versus Expertise. That distinction is a revenue disaggregation, not a segment-profit disclosure: CACI does not provide separate Technology and Expertise operating margins. Any claim that “Technology earns X margin and Expertise earns Y” would be fabricated.

Every growth rate in this table is reported growth for fiscal 2026, not organic growth. CACI disclosed fiscal 2026 company-wide organic growth of 7.2%; it did not publish organic growth for each category above.

The Expertise business sells people with scarce functional and technical knowledge: software developers, analysts, engineers, naval architects, intelligence specialists, special-operations support and network exploitation expertise. This remains economically valuable because the customer cannot readily put an unvetted workforce into classified missions. Its weaknesses are familiar: labor markets put pressure on wages, government contracting officers see labor rates clearly, and revenue generally scales with people and hours.

Technology includes agile software development, open architectures, DevSecOps, AI-enabled data platforms, enterprise resource planning, electromagnetic-spectrum capabilities, space-based sensors and processors, photonics and network modernization. That business can scale differently. Some software-defined products embody R&D that CACI funded before a formal customer solicitation, and some hardware-enabled technologies can move from development to low-rate initial production and eventually larger quantities. CACI's Spectral electronic-warfare program reaching Milestone C in fiscal 2026 is a concrete example of that transition from development into initial production.

Cost-plus contracts are the stabilizer: the government reimburses allowable costs plus a negotiated fee. Inflation and unforeseen cost increases therefore hurt less, but the upside from exceptional execution is limited. Fixed-price work puts more cost and schedule risk on CACI in exchange for greater profit potential. Time-and-materials contracts sit between the two: hourly billing is predetermined, leaving CACI exposed when labor and indirect costs outrun those rates. The fiscal 2026 shift from cost-plus toward fixed-price raises both the company's margin ceiling and its execution risk.

The buyer has substantial bargaining power. The federal government supplies approximately 96% of revenue, specifies most contractual terms, can audit allowable costs and can terminate contracts for convenience. Contracts also depend on annual appropriations, options and task orders. CACI has little conventional pricing power against that customer. Its route to better economics is to own a capability important enough that the customer evaluates mission outcome and differentiated performance rather than simply comparing labor rates.

The first real moat is customer access plus mission credibility. Past performance matters in federal source selection. CACI is prime on 90.1% of its business, which keeps the customer relationship and contract management closer to CACI rather than another integrator. The fiscal 2027 revenue composition, with 83% already existing and only 9% facing recompete, is evidence of unusually strong short-horizon continuity.

The second moat is the intersection of security-cleared expertise and proprietary technology. Pure software vendors can write excellent code but may lack cleared people, classified infrastructure, contracting history or integration expertise. Traditional labor contractors may have those attributes but lack differentiated RF, photonics, electronic-warfare or sensor technology. CACI deliberately operates at the intersection. That is why Applied Insight, Azure Summit and ARKA make strategic sense together even though the acquisition prices were large.

The third moat is an acquisition-and-integration capability that broadens the product portfolio without relying exclusively on internal invention. CACI's leverage chart is useful evidence because it covers more than one acquisition cycle: leverage has repeatedly spiked after deals and subsequently declined with cash generation. This is a real historical capability, although ARKA's size means past success cannot simply be extrapolated.

A fourth, narrower advantage is contract architecture. IDIQ and government-wide vehicles do not guarantee revenue, but being on the right vehicle can sharply reduce the time and friction required for an agency to buy. CACI's inclusion on the 151 billion USD SHIELD vehicle, for example, creates access to future missile-defense task orders while contributing zero of that ceiling to awards or backlog until actual tasks are received. That distinction is central to avoiding inflated “TAM equals revenue” analysis.

CACI's moat is strongest where a hard-to-replace mission capability, classified customer knowledge and a contract position overlap. It is much weaker in generic labor-based IT services.

Traditional intellectual-property protection is not the primary moat. CACI's annual report explicitly says its solutions and services are not substantially dependent on patents or other formal IP protection, even though it owns patents, copyrights and trade secrets. Nor are there meaningful network effects of the kind that support a consumer platform or cloud marketplace.

The relevant “industry” is not one market. CACI's own current portfolio spans seven named areas: C3I, cyber, digital solutions, enterprise IT, mission and engineering support, space, and spectrum superiority. Management estimates the total addressable market across its selected areas at more than 300 billion USD. With fiscal 2026 revenue under 10 billion USD, even a rough comparison implies CACI holds only a low-single-digit share of the addressable pool. The 300 billion USD figure is management's TAM estimate, not an independently audited market-size statistic, so it should be used as evidence of fragmentation rather than a precise revenue forecast.

The market is mature in procurement mechanics but growing in selected mission categories. Federal customers have bought engineering, IT and intelligence support for decades. The growth comes from changing content: software replacing bespoke legacy systems, electromagnetic-spectrum warfare becoming more important, sensor architectures becoming more distributed, cyber threats expanding, and national-security customers seeking AI-assisted analysis. CACI's technology mix growing 16.9% on a reported basis while Expertise grew 3.5% in fiscal 2026 is consistent with the profit pool moving toward those differentiated capabilities.

The company is policy-cyclical rather than conventionally macro-cyclical. A recession does not directly eliminate intelligence or electronic-warfare requirements. The key cycle runs through U.S. appropriations, administration priorities and procurement timing. CACI's annual report notes that agencies commonly make extra awards near the September 30 federal fiscal year-end, while continuing resolutions traditionally restrict new initiatives.

Fiscal 2026 provided a useful stress test. The U.S. government entered a shutdown on October 1, 2025; CACI explicitly said the shutdown prevented it from announcing details on some first-quarter awards. Yet fiscal first-quarter 2026 revenue still grew 11.2% on a reported basis and 5.5% organically, and the company recorded 5.0 billion USD of awards. Government disruption can move revenue and award timing without necessarily destroying demand.

CACI's fiscal 2026 filing described a generally constructive funding environment around defense and security priorities. It cited fiscal 2026 defense appropriations of approximately 838.7 billion USD as well as supplemental reconciliation funding under the One Big Beautiful Bill Act, including money for missile defense and border priorities. CACI's own fiscal 2027 presentation characterized customer budgets as large and growing and said procurement activity was beginning to improve.

The vulnerability is timing. A continuing resolution can preserve existing programs while stopping or delaying new starts; a protest can halt an award after CACI believes it has won; an unexercised option can disappear from expected backlog. CACI's 10-K says bid protests have become more frequent and can take longer to resolve, increasing proposal expense and delaying program startup. This is why funded backlog, actual task-order awards and organic revenue conversion deserve more weight than press releases announcing vehicle ceilings.

Geopolitical deterioration is an unusual two-sided risk. Rising threats can increase demand for spectrum warfare, space sensing, counter-UAS systems and intelligence software. Severe geopolitical disruption can also increase interest rates, inflation and supply-chain stress, which matter more now that CACI manufactures more electronics and carries much more debt. On September 9, 2026, the U.S. 10-year Treasury yield closed around 4.84% amid a global bond selloff. That rate does not directly reduce federal mission demand, but it raises CACI's equity hurdle rate and makes a 20-times adjusted-earnings valuation less forgiving.

Horizontal competitor analysis

There are ample competitors, but there is no perfect twin. Leidos is the best scaled national-security technology-and-services reference; Booz Allen Hamilton is a close federal consulting, cyber and AI reference; SAIC represents the more mature government-IT and engineering model; Parsons captures a more technology-rich and faster-growth defense/infrastructure profile. Palantir is economically too software-heavy to be a direct valuation peer, yet it matters because it shows how far investors are willing to re-rate a national-security company when revenue becomes genuinely software-like. That peer group is directionally right, with Palantir treated as a boundary case rather than included mechanically in CACI's fair multiple.

Fiscal-period alignment is critical. CACI fiscal 2026 ended June 30, 2026. Booz Allen reports on a March fiscal year, SAIC on a fiscal year around January, while Leidos, Parsons and Palantir use calendar-year reporting. I do not place their annual year-over-year growth rates next to CACI's fiscal 2026 rate and call that an aligned operating comparison. The table below is only a same-market-date capital-market snapshot: price, market capitalization and trailing vendor P/E as of the September 9, 2026 U.S. close. Those trailing P/Es also contain each company's own GAAP acquisition and tax effects, so they are a starting point, not the relative-valuation conclusion.

† Market-data-provider trailing P/E, not adjusted P/E. All market values are USD and as of the 2026-09-09 U.S. trading close.

CACI has clearly moved out of the SAIC/Leidos valuation neighborhood on trailing GAAP P/E. Part of that apparent premium is accounting. CACI's fiscal 2026 GAAP EPS absorbs very large acquisition-intangible amortization after Azure and ARKA; its trailing adjusted P/E is 20.3 times, not 25.1 times. Even on the adjusted basis, however, CACI is no longer being priced as a low-growth federal outsourcer. The multiple requires better organic growth and margin progress than a mature services contractor.

Leidos represents the scale end of the spectrum. Its calendar fourth quarter of 2025 showed what federal disruption can do even to a diversified contractor: Reuters reported revenue down 3.6% year over year as the shutdown delayed government activity, while adjusted profit still beat expectations because margins improved. CACI's relatively stronger fiscal 2026 organic growth and concentration in defense/intelligence missions explain why investors have been willing to give it a higher growth multiple.

Booz Allen shows the risk at the consulting-heavy end. During its fiscal second quarter of 2026, revenue fell 8.1% year over year and management reduced fiscal-year guidance because of a federal funding slowdown. The stock's subsequent de-rating to roughly 11 times trailing earnings by September 2026 is a capital-market warning: government-tech narratives receive little valuation protection when billable work actually contracts. CACI's 83% existing-business coverage for fiscal 2027 and smaller civilian mix provide a better near-term setup, but the two firms compete for many of the same scarce technical people and federal modernization budgets.

SAIC is useful precisely because it represents what CACI is trying not to become: a competent federal-services franchise whose revenue is dependable but whose organic-growth and differentiated-technology narrative does not justify a high multiple. At roughly 14.7 times trailing earnings as of September 9, its market valuation gives a rough downside reference for what could happen to CACI's multiple if the technology transition stalls.

Parsons sits on the other side. At roughly 31.9 times trailing earnings, the market awards a substantially higher multiple to a contractor perceived as having stronger technology and growth content. CACI's current multiple is already between the mature-services and higher-growth technology comparators. That is rational if fiscal 2027 organic growth remains in the guided 6.1–8.2% range and margins hold in the high-12% area. It leaves less protection if those metrics revert toward ordinary services economics.

Palantir sets the outer boundary. At roughly 145 times trailing earnings and a September 2026 market capitalization above 435 billion USD, it is priced for software economics that CACI does not possess. CACI still earns 56% of revenue under cost-plus-fee contracts and employs about 27,000 people to deliver mission work. Treating “agentic AI” inside ARKA as a reason to value the whole enterprise like Palantir would be a category mistake.

Where CACI is more interesting than the traditional peers is the combination of product and services. The customer can buy a software-defined EW capability, sensor or RF product and also obtain the cleared engineers who know how to integrate it into a classified mission architecture. That makes CACI more difficult to displace on the programs where its proprietary technology matters. It does not protect commodity enterprise-IT work, where Booz Allen, Leidos, SAIC, cloud providers and increasingly software-platform companies can compete aggressively.

CACI's ecological niche is the middle ground between labor-based federal integration and pure defense software: it is trying to turn classified customer access into a distribution channel for proprietary national-security technology. Its opportunity is to take margin pool from conventional service contractors. Its danger is that commercial software firms take the high-value software layer while larger integrators retain the systems-integration layer, leaving CACI with expensive acquired technologies that do not scale.

Current fundamentals valuation risk and tracking

The last four fiscal 2026 quarters show why the August re-rating occurred. Organic growth slowed into the December quarter, accelerated in March, then surged in June, while reported growth accelerated even more sharply after ARKA closed in March. Keeping the two bases separate prevents the acquisition from being mistaken for an organic inflection.

All quarterly EPS figures are CACI-adjusted diluted EPS, not GAAP EPS.

Free cash flow was 143.0 million USD in fiscal Q1, 138.2 million USD in fiscal Q2, 221.4 million USD in fiscal Q3 and 232.9 million USD in fiscal Q4. The improvement was driven by higher earnings and working-capital execution, although quarterly cash flow is inherently noisy in this business. Days sales outstanding excluding MARPA was 56 days in fiscal Q1, 57 in fiscal Q2 and 55 in fiscal Q3, illustrating why several days of collection timing can move annual cash flow materially.

Awards were even lumpier: 5.0 billion USD in fiscal Q1, 1.4 billion USD in fiscal Q2, 2.2 billion USD in fiscal Q3 and about 1.6 billion USD in fiscal Q4. Full-year book-to-bill of 1.1 times is more informative than any one quarter. Total backlog rose from 31.4 billion USD to 32.0 billion USD year over year, while funded backlog rose from 4.2 billion USD to 5.4 billion USD. The deterioration to watch is a trailing book-to-bill persistently below 1 combined with funded backlog beginning to contract, not “one weak award quarter.”

Management's guidance progression is another positive data point. At the start of fiscal 2026, revenue guidance was 9.2–9.4 billion USD and adjusted diluted EPS guidance 27.13–28.03 USD. In January 2026, before ARKA was included, management raised those to 9.3–9.5 billion USD and 28.25–28.92 USD. After ARKA closed, April revenue guidance rose to 9.5–9.6 billion USD, while adjusted EPS guidance fell to 27.70–28.38 USD because ARKA brought transaction expense and financing cost. Actual fiscal 2026 adjusted diluted EPS was 29.83 USD, comfortably above the final range.

Fiscal 2027 guidance is more demanding. Revenue of 10.65–10.85 billion USD implies 11.3–13.4% reported growth, with 6.1–8.2% explicitly identified as organic and approximately 500 million USD of acquired revenue. Adjusted net income is guided to 735–755 million USD, adjusted diluted EPS to 32.96–33.86 USD, free cash flow to at least 900 million USD and EBITDA margin to the “high 12% range.” Management expects fiscal Q1 EBITDA margin only in the mid-11% range, so a sequential margin drop at the next quarter is already incorporated in guidance and should not automatically be interpreted as deterioration.

The quality of the 900 million USD FCF guide requires one adjustment. It assumes approximately 115 million USD of cash-tax benefit connected with Section 174A and approximately 40 million USD from a prior-year tax refund. The 40 million USD refund is clearly a timing item. The Section 174A cash benefit is legally real, but an investor should not automatically capitalize the entire amount as permanent operating improvement. On a normalized basis, fiscal 2027 cash generation is less spectacular than the headline 22%-plus FCF growth suggests.

The public sources reviewed did not provide a reliable, timestamped pre- and post-August consensus-estimate series across all analysts, so I do not state an unsupported percentage for estimate revisions. What the record does establish: fiscal Q4 adjusted diluted EPS of 8.91 USD substantially beat the roughly 7.39 USD FactSet expectation cited immediately after the release, and the stock rose more than 21%. William Blair described the 11.6% fiscal Q4 organic growth rate as CACI's strongest since 2024.

The share price currently reflects four things: stronger organic growth, evidence that higher technology content is lifting margins, confidence that ARKA expands a well-funded space/intelligence franchise, and a belief that debt can be brought back down quickly. AI helps the narrative, but CACI's valuation remains far removed from AI-software multiples. The real earnings and cash-flow improvement is large enough that the rally cannot be dismissed as a theme trade.

The bull case begins with organic growth. Fiscal Q4's 11.6% rate was not acquisition growth, and fiscal 2027 guidance requires only 6.1–8.2%. Even a substantial deceleration would allow management to meet guidance. Technology represented 61.2% of fiscal Q4 revenue and grew 23.7% on a reported basis, indicating that the portfolio mix continued moving toward the higher-value side of the business.

The second bull point is visibility. Fiscal 2027 starts with 83% of expected revenue on existing business and only 9% dependent on recompetes. Funded backlog is up 29% year over year. Those numbers make a sudden top-line collapse unlikely absent an unusual federal-budget or program event.

The third is the margin path. Fiscal 2026 EBITDA margin rose 110 basis points to 12.3%, and fiscal Q4 reached 13.0%. Because the fiscal 2026 gain came mainly from execution and mix rather than a large one-time item, a high-12% fiscal 2027 margin is supported by operating evidence.

The bear case begins with backlog. Total backlog grew only 1.9% in fiscal 2026 despite 10.9% reported revenue growth. The funded component is excellent, but the slower total backlog means CACI eventually needs the large new-business pipeline to convert. A trailing book-to-bill of 1.1 times is healthy rather than spectacular.

The second bear point is leverage. Pro-forma net leverage of 3.7 times is high for a company whose ultimate customer can delay contract starts through appropriations and protests. Management has a credible historical deleveraging record, but the fiscal 2027 target itself tells investors where cash must go: debt reduction before aggressive buybacks.

The third is acquisition-accounting intensity. ARKA and Azure created billions of dollars of goodwill and intangible assets, while the acquired-intangible add-back is now large enough that fiscal 2027 adjusted diluted EPS is approximately 28% above GAAP guidance at the midpoint. The add-back is defensible as a noncash item, but a widening adjustment gap tells investors that more of CACI's growth was purchased with capital.

The fourth bear point is price. A June 30, 2026 holder valued the company at 463.26 USD per share. Little more than two months later the price is 606.85 USD. Fiscal 2027 adjusted-EPS guidance is attractive, but the share-price appreciation has already pulled substantial future improvement into today's multiple.

The historical valuation record reinforces that point. Using CACI's fiscal year-end share-price performance and reported EPS, its adjusted P/E at June 30 fiscal-year ends since fiscal 2021 has generally occupied roughly the low-teens to around 20 times range. At the June 30, 2026 close, fiscal 2026 adjusted P/E was only about 15.5 times. At 606.85 USD it is 20.3 times. The exact percentile depends on daily rather than year-end observations, so I would describe today's multiple as the high end of the recent fiscal-year-end range rather than claim an artificially precise percentile.

The valuation starts with cash passthrough. Cumulative fiscal 2022–fiscal 2026 operating cash flow divided by cumulative GAAP net income was approximately 1.39 times; using operating cash flow excluding MARPA gives about 1.32 times. Accounting earnings have converted to cash over the cycle.

CACI does not disclose maintenance capital expenditure separately from growth capital expenditure. Fiscal 2021–fiscal 2025 capex averaged roughly 68 million USD before rising to 106.7 million USD in fiscal 2026 and an expected 115 million USD in fiscal 2027. My valuation assumes fiscal 2026 maintenance capex of approximately 75 million USD and a fiscal 2027 sustainable range of 75–90 million USD, with the balance associated mainly with portfolio growth and manufacturing investment. This is an analytical assumption, not a company disclosure.

Using cash operating income rather than accounting net income, fiscal 2026 “owner earnings” can be approximated as 842 million USD of operating cash flow excluding MARPA less about 75 million USD of estimated maintenance capex, or approximately 767 million USD. On roughly 22.1 million shares, that is about 34.7 USD per share. At 606.85 USD, CACI trades at roughly 17.5 times this owner-earnings measure, a 5.7% owner-earnings yield. That multiple is about 30% lower than the 25.1-times fiscal 2026 GAAP P/E. Because the difference reaches 30%, a gap large enough to change which earnings measure should anchor the valuation, the scenarios below use owner cash earnings as the primary anchor, with adjusted P/E and EV/EBITDA as cross-checks.

Headline fiscal 2026 free cash flow after all capex was 735.4 million USD, equivalent to a 5.5% yield on the September 9 market capitalization. Fiscal 2027 guidance of at least 900 million USD implies a 6.7% headline forward FCF yield, but approximately 155 million USD of specified cash-tax benefits and refund timing argues for a normalized range below that headline.

The three valuation methods give reasonably similar central values. On adjusted EPS, 18–20 times the fiscal 2027 midpoint of 33.41 USD produces roughly 601–668 USD. On cash owner earnings, a normalized 39–40 USD per share at a 6.0–6.25% required yield gives roughly 624–667 USD. On EV/EBITDA, assuming about 12.8% fiscal 2027 EBITDA margin at the 10.75 billion USD revenue midpoint, approximately 13–13.5 times EBITDA and modest debt reduction supports equity value around the mid-600s. The trailing 15.5-times EV/EBITDA calculated on fiscal 2026 reported EBITDA is less useful because that EBITDA includes only a partial period of ARKA while June debt includes the entire acquisition financing.

† Three-year return assumes no dividend and scenario-specific owner-earnings growth and terminal multiples; it is not a management forecast. Scenario inputs incorporate CACI's fiscal 2027 guidance but deliberately vary organic growth, cash normalization and valuation.

The conservative case assumes that ARKA is strategically useful but fails to raise CACI's structural organic growth rate, margins give back part of fiscal 2026's improvement, and investors award a multiple closer to the upper end of a mature government-services range. The principal permanent-loss trigger is a combination of weak organic growth and leverage remaining high, because that removes both the earnings-growth and balance-sheet arguments supporting today's premium.

The base case accepts management's fiscal 2027 organic-growth band and high-12% EBITDA margin as approximately sustainable after ARKA's first full year, while normalizing part of the tax-related cash benefit. It does not require Palantir-like software economics. At 606.85 USD, the share price sits modestly below this base fair-value range but above the conservative range, so there is no classic margin of safety.

The optimistic case requires the technology business to continue taking mix share, ARKA and Azure to produce attractive program growth, fixed-price/product economics to lift EBITDA margin toward the low-13s, and deleveraging to restore capital-allocation flexibility. A 770–820 USD present value under those assumptions is plausible; it already assumes unusually good execution for a federal contractor.

This is valuation-scenario analysis within a research framework, not investment advice.

The expectation gap is concentrated in four numbers: organic growth, EBITDA margin, funded backlog and net leverage. Reported growth will remain flattered by ARKA through its first anniversary, so investors should ignore a double-digit reported growth print if organic growth unexpectedly falls below the guided range. Conversely, organic growth around 8% with a high-12% margin would validate the re-rating even if total backlog remains lumpy.

At the next earnings report the market should care less about reported growth than about the organic rate and the fiscal Q1 margin bridge. Management has already signaled a mid-11% fiscal Q1 EBITDA margin, meaning a quarter near that level is not a miss by itself. Evidence that the full-year high-12% target is slipping would matter much more.

The margin-of-safety test is less flattering than the base valuation. Current price is above the 540–570 USD conservative fair-value range, so on the conservative case the current margin of safety is zero.

The most fragile base-case assumption is that fiscal 2027–fiscal 2029 organic growth can remain around 7% while margin stays near the high-12s. Reducing the organic-growth assumption to 70% of the base level, approximately 4.9%, and lowering the cash multiple modestly to reflect slower compounding reduces my base value to roughly 575–610 USD. That puts the current price at or above stressed fair value.

If earnings remain completely flat for three years and the exit multiple is unchanged, a non-dividend-paying CACI produces approximately 0% annualized price return. The September 9, 2026 U.S. 10-year Treasury yield was about 4.84%. On that deliberately harsh flat-earnings test, there is no margin of safety at this buy price.

This is closer to “good company at a full price” than “good company at a terrible price.” Waiting has a real opportunity cost because fiscal 2027 FCF could exceed 900 million USD and leverage could fall faster than expected. Yet the current valuation does not compensate an investor for the conservative case.

Margin-of-safety sufficiency verdict: none.

The permanent-loss risks are specific.

ARKA integration and purchase-price risk has medium probability and high impact. The observable indicators are organic growth in space-related technology, total and funded backlog, EBITDA margin, acquisition-related impairment and the leverage path. Failure transmits first through lower EBITDA and slower debt reduction, then through a lower valuation multiple. With more than 2.6 billion USD of ARKA consideration largely allocated to goodwill and acquired intangibles, an impairment would be a lagging confirmation that cash had been overpaid.

Federal funding and procurement disruption has medium probability and medium-to-high impact. Watch continuing resolutions, shutdowns, delayed task orders and recompete decisions. The economic transmission is timing first, utilization and revenue second, then backlog and estimates if delays persist. Fiscal 2026 proved that CACI can grow through a shutdown, but Booz Allen and Leidos also show that contractor revenue is not immune when agency activity slows long enough.

Contract execution risk is medium probability and medium impact and is rising with the fixed-price mix. Fiscal 2026 fixed-price revenue represented 30.4%, up from 26.3% in fiscal 2025. Under fixed-price arrangements, CACI bears cost overruns. The observable warning is a rising fixed-price share paired with EBITDA-margin deterioration, loss provisions or lower cash conversion.

Leverage and interest risk is medium probability and high impact. Net debt was roughly 4.74 billion USD at fiscal 2026 year-end, and fiscal 2027 net-interest planning is approximately 288 million USD. The clean test is whether pro-forma leverage falls from 3.7 times toward the low 3s by June 2027. A miss caused by weak EBITDA is much worse than a miss caused by another deliberately chosen acquisition because it would undermine the cash-generation thesis itself.

Valuation compression is medium probability and medium-to-high impact. The stock has risen approximately 31% since June 30, and the 20.3-times trailing adjusted P/E is near the upper end of recent fiscal-year-end observations. With the 10-year Treasury near 4.84%, investors need actual earnings growth to justify paying that multiple. A return to a 15-times adjusted P/E on roughly 33 USD of earnings would put the shares near 500 USD even without an earnings decline.

Positive catalysts are straightforward: fiscal 2027 organic growth near the high end of 6.1–8.2%; EBITDA margin reaching the high-12% full-year target despite a seasonally weaker fiscal Q1; funded backlog continuing to grow double digits; ARKA contributing enough EBITDA to drive leverage into the low 3s by June; large production orders in electronic warfare, counter-UAS or space sensing; and normalized FCF showing that the 900 million USD headline is not solely tax timing.

Negative catalysts are the mirror image but should not be treated symmetrically: two quarters of sub-4% organic growth, total backlog erosion accompanied by book-to-bill below 0.9, an unexpected fixed-price charge, a leverage-target miss, an ARKA-related impairment, or a federal appropriations interruption long enough to push work rather than merely announcements into later periods.

The tracking dashboard below turns those risks into observable tests.

The next earnings date had not been posted as an upcoming earnings event on CACI's IR calendar as of the research base date. Fiscal Q1 2026 results were released on October 22, 2025, so late October 2026 is an inference from CACI's reporting cadence, not an announced date.

Organic growth, funded backlog, book-to-bill and the fiscal 2027 revenue-composition slides are available from CACI's quarterly releases and presentations. Leverage belongs in the same dashboard because an investor who tracks EPS but ignores debt would miss the principal financial consequence of ARKA. DSO and FCF show whether revenue turns into cash. The valuation row forces the thesis to be reconsidered when share-price appreciation gets ahead of estimate growth.

Cross-synthesis summary

CACI's sixty-plus-year story contains an unusual circularity. It was born as a specialized software company, became a large government-services contractor, and is now spending billions of dollars trying to make differentiated technology central again. The modern version has advantages the 1960s company did not: 27,000 employees, decades of classified past performance, federal contract vehicles, a 90% prime-contractor position and a 32 billion USD backlog. The challenge is preserving those advantages while recovering the better economics of proprietary technology.

Vertically, the capability CACI has genuinely proven is adaptation inside a difficult procurement system. It began with simulation software, expanded through services, survived changing administrations and technology eras, and repeatedly used acquisitions to enter more attractive niches. Its leverage record supports management's claim that acquisition debt can be temporary: the company has repeatedly moved leverage toward 4 times or above after major acquisitions and subsequently brought it down.

Past success was a mixture of structural tailwind and management capability. U.S. national-security spending supplied the market. Security-clearance requirements, procurement rules and long contract durations slowed competitive entry. CACI management converted those conditions into a portfolio with increasing technology content. Fiscal 2021-to-fiscal 2026 revenue compounding around 9.6%, accompanied by a margin move from roughly 11% to 12.3%, is too persistent to describe as a single budget-cycle windfall.

The tailwind remains. CACI's management estimates more than 300 billion USD of addressable spending across its seven selected markets and sees customer budgets as large and growing. Spectrum warfare, counter-drone systems, secure communications, space sensing, cyber and mission software are tied directly to current national-security priorities. The federal customer can still delay a program, and political control can move budgets between accounts, but the broad need to modernize military and intelligence systems is more durable than an ordinary commercial IT spending cycle.

Horizontally, scale is not CACI's real advantage; Leidos is larger. Software purity is not it either; Palantir is vastly more software-centric. Nor is a low-cost labor position; the federal services field has many capable competitors. CACI is differentiated where it can combine its own spectrum, photonics, sensing or software technology with the cleared workforce and contract access needed to insert that technology into a national-security mission.

This hybrid model explains why CACI can sustain a higher valuation than an ordinary government integrator without deserving a pure-software multiple. The fiscal 2026 numbers map almost perfectly onto the strategic claim: Technology was 58.4% of revenue and grew 16.9% reported; Expertise was 41.6% and grew 3.5%; fixed-price work rose; EBITDA margin rose 110 basis points. Those are the numbers investors should use to decide whether “technology company” is economic reality or marketing. So far, they favor reality.

The structural weakness is that CACI is buying much of this transition. Azure cost more than 1.3 billion USD and ARKA more than 2.6 billion USD. Goodwill and intangible assets now exceed 8.5 billion USD. Amortization adds almost 10 USD per share to the fiscal 2027 adjusted-EPS reconciliation before tax. Organic growth remains essential because a company cannot create shareholder value indefinitely merely by replacing cash and debt with acquired EBITDA.

That is the central five-year test. If CACI's acquired technologies produce internally generated program wins after their original contracts roll forward, the M&A spending will have built a compounding platform. If growth requires another multibillion-dollar acquisition every few years merely to keep total revenue in double digits, the economic moat is narrower than the accounting growth suggests.

At the one-year horizon, ARKA integration and deleveraging matter more. The company has already told investors what success looks like: reported fiscal 2027 revenue growth of 11.3–13.4%, organic growth of 6.1–8.2%, high-12% EBITDA margin, at least 900 million USD of headline free cash flow and leverage in the low 3s by June 2027. These are unusually crisp falsification points.

At three years, the question shifts to whether the 12%-plus margin is structural. A technology mix above 60% with continued mid-to-high-single-digit organic growth would argue that it is. A return to 4% organic growth and 11% margin after acquisition contributions fade would argue that CACI simply enjoyed an unusually good federal spending and acquisition period.

At five years, capital allocation dominates. The company must prove that technology acquired at high goodwill/intangible values earns an adequate cash return after interest and subsequent reinvestment. Accounting ROIC will be depressed by the large acquired asset base. The economic measure to watch is whether free cash flow per share grows after acquisition debt is reduced without requiring persistent share issuance or another leverage reset.

The current price is rewarding some future success rather than merely past success. At 606.85 USD, CACI trades about 31% above the June 30 level and about 20.3 times fiscal 2026 adjusted diluted EPS. Fiscal 2027 adjusted guidance lowers the forward multiple to roughly 18.2 times, which is defensible for a company organically growing 6–8% with rising margins. It is not a distressed or neglected valuation.

The market may be underestimating the cash power of the business after leverage falls. Fiscal 2026 five-year cash conversion is strong, and management's leverage history provides evidence that ARKA debt can be reduced quickly. Once leverage returns closer to normal, free cash flow can again be used for buybacks or another acquisition rather than predominantly balance-sheet repair.

At the same time, the market may be overestimating fiscal 2027's headline FCF acceleration. The at-least-900-million-USD guide includes material tax benefits and a delayed refund. Investors should normalize that cash before extrapolating a 20%-plus FCF-per-share growth rate.

The market is also vulnerable to mistaking backlog quantity for quality. Only 5.4 billion USD of the 32 billion USD backlog is funded. That is how multi-year federal contracting works, not a flaw. But it means the 32 billion USD cannot be treated like a commercial SaaS remaining-performance obligation with unconditional customer funding. Options, appropriations and task orders still matter.

I would become more constructive at the same price if three things happened without the shares moving: ARKA helped sustain 7%-plus organic growth after its acquisition anniversary, normalized EBITDA margin remained near 13%, and pro-forma leverage reached around 3 times. Those events would reduce the conservative downside and support a higher sustainable cash multiple.

I would become more constructive immediately at a much lower price if operating evidence remained intact. At roughly 432–455 USD, the shares would be at least 20% below my 540–570 USD conservative fair-value range. That is the point at which a good business begins to offer a conservative margin of safety rather than merely a reasonable base-case return.

I would overturn the positive assessment of business quality if organic growth stayed below 4% for two quarters while funded backlog declined, or if leverage failed to move materially toward the low 3s because EBITDA and cash flow missed rather than because management deliberately chose another transaction. Either development would suggest the portfolio transition is not producing the expected internal growth.

Core bull reasons are concise because the evidence has already been developed:

• Fiscal Q4 2026 organic revenue growth was 11.6%, while fiscal 2027 guidance requires only 6.1–8.2%, leaving room for substantial deceleration and still meeting plan.
• Technology reached 58.4% of fiscal 2026 revenue and grew 16.9% on a reported basis, coinciding with EBITDA-margin expansion from 11.2% to 12.3%.
• Funded backlog rose approximately 29%, and 83% of expected fiscal 2027 revenue is existing business, giving strong near-term visibility.
• Fiscal 2022–fiscal 2026 cumulative operating cash flow excluding MARPA equaled about 1.32 times cumulative GAAP net income, supporting earnings quality.
• Management has historically reduced leverage after major acquisitions and expects ARKA-related pro-forma leverage to fall from 3.7 times to the low 3s by June 2027.

Core bear reasons are equally concrete:

• Total backlog grew only 1.9% in fiscal 2026, much slower than 10.9% reported revenue growth, while trailing book-to-bill was only 1.1 times.
• ARKA lifted pro-forma leverage to 3.7 times and fiscal 2027 net-interest expense is expected to be roughly 288 million USD, reducing financial flexibility.
• Goodwill plus acquired intangibles exceed 8.5 billion USD, and fiscal 2026 adjusted diluted EPS was 23.5% above GAAP diluted EPS because of acquisition amortization.
• Fiscal 2027 headline FCF of at least 900 million USD contains approximately 155 million USD of identified tax-benefit and refund effects, making headline growth stronger than normalized cash growth.
• The stock has risen about 31% since June 30, taking trailing adjusted P/E from about 15.5 times at that fiscal year-end price to about 20.3 times today.

The pre-mortem provides the real stress test.

One plausible 50%-loss script runs through ARKA. During fiscal 2027 and fiscal 2028, U.S. space and intelligence procurement shifts program timing, ARKA sensor awards grow more slowly than CACI expected and planned technology production slips. Organic growth falls to 2–3%; EBITDA margin moves from the high-12% target toward 11%; net leverage remains near 3.7 times instead of falling into the low 3s. Adjusted diluted EPS stagnates around 27–29 USD as interest remains high. Investors then value CACI like a mature government-services contractor at 11–12 times adjusted earnings. A 28 USD EPS base at 11.5 times implies roughly 322 USD, about 47% below the September 9 price. The damage comes from earnings and multiple compression simultaneously, while an ARKA goodwill impairment confirms that the acquisition price was too high.

A second script runs through competitive substitution. By fiscal 2028, Leidos, Booz Allen and software-led teams built around platforms such as Palantir win a greater share of federal software-modernization and AI task orders, while CACI remains strong in EW hardware but fails to generate enough new software business. Trailing book-to-bill falls below 0.8, Technology growth slows to low single digits and consolidated EBITDA margin falls toward 11%. If adjusted diluted EPS reaches only 28 USD rather than compounding and the market applies a 12-times multiple, the share price is about 336 USD, down approximately 45%. This scenario would not require the federal budget to collapse; it requires CACI's differentiated-technology thesis to prove narrower than expected.

The final judgment is that CACI has become a better business faster than its old “government IT” label suggests, but the September 2026 price already recognizes that improvement. Organic growth, mix and cash conversion support the quality case. The balance-sheet risk after ARKA is manageable on present evidence, not trivial. A purchaser today is relying on management to deliver fiscal 2027 almost as planned and then preserve the higher growth/margin structure after acquisition contribution normalizes.

The 12-month setup can still produce attractive upside if organic growth remains near 8%, margins surprise positively and leverage falls faster than expected. The three-to-five-year setup is more demanding: ARKA and Azure must generate organic opportunities rather than simply purchased revenue. At 606.85 USD, I see a reasonable holding valuation and an inadequate conservative buying margin.

【Company-profile scores】

• Fundamental quality: high
• Growth: high
• Moat: strong
• Financial soundness: medium
• Management credibility: high
• Valuation attractiveness: medium
• Risk level: medium
• Suitable investor type: long-term growth

【Investment rating】

• Rating: Hold
• One-line thesis: Strong organic growth and technology mix support compounding, but post-ARKA leverage and a 20x trailing adjusted P/E leave no conservative margin of safety.
• Acceptable hold price: 560–750 USD
• Clearly overvalued price: 905–950 USD
• Current-price classification: acceptable hold
• Whether to wait for a better price: yes. For a new position under this framework, 455 USD or lower becomes attractive provided organic growth remains at least 6%, funded backlog is stable-to-growing and leverage remains on track for the low 3s. Waiting risks missing further upside if ARKA integrates faster and fiscal 2027 FCF materially exceeds guidance.
• Target holding horizon: 3–5 years
• Expected annualized return: conservative about -6% to -3%; base about 6% to 10%; optimistic about 17% to 22%, using a three-year scenario horizon and no dividend.
• Max-loss risk: roughly 45–55% if organic growth falls to low single digits, EBITDA margin returns toward 11%, ARKA leverage fails to decline and adjusted P/E compresses to 11–12x.
• Reassessment-trigger signals: organic growth below 4% for two consecutive quarters; normalized EBITDA margin below 11.5% for two quarters; pro-forma leverage materially above the low-3-times target at June 2027; funded backlog turning negative year over year alongside trailing book-to-bill below 0.9; or a material ARKA/Azure impairment accompanied by weaker cash guidance.

【Ideal Buy Price】432–455 USD

Basis: 20% below the 540–570 USD conservative present fair-value range, rounded conservatively; this is the only buy-price basis used in the report.

【Valuation Range】

• current: 606.85 (close as of 2026-09-09)
• bear (conservative · ideal buy zone): [432, 455]
• base (fair · acceptable hold zone): [560, 750]
• bull (optimistic · above the clearly-overvalued line): [905, 950]

The bear band is approximately 20% below the conservative 540–570 USD valuation. The base band is the rounded ±15% zone around the 655 USD midpoint of the 630–680 USD base valuation. The bull band begins just over 10% above the 820 USD upper end of the optimistic valuation and extends to roughly 16% above it. Those transformations make the price signals mechanically traceable to the scenario analysis rather than discretionary numbers added at the end.

Source discipline and research uncertainties: the primary research base consists of CACI's fiscal 2026 10-K, August 5 fiscal 2026 earnings release, August fiscal 2026 earnings presentation, September 2026 proxy, fiscal Q1–Q3 2026 releases, fiscal 2025 10-K and CACI's investor-relations archive. Market-price and peer-market-cap data are September 9, 2026 market-feed observations; Reuters, Barron's and Investor's Business Daily are used only for contemporaneous market reaction and peer-event context.

Five blind spots deserve explicit treatment. CACI guided ARKA to roughly 650 million USD of revenue and 145 million to 150 million USD of EBITDA in its first twelve months, but has not reported ARKA's realized standalone results since closing, so the acquisition return remains a forward estimate rather than a measured outcome. CACI does not split maintenance and growth capex, so the owner-earnings adjustment is an estimate. Management calls the recompete win rate “high” but publishes no numeric rate. The fiscal 2024 acquisition accounting is aggregated rather than fully transaction-specific. Finally, the search did not yield a complete same-date set of primary fiscal 2026 operating statements for every peer, so relative valuation relies on same-date market measures and qualitative competitive analysis rather than presenting falsely precise, unaligned annual peer margins.

Other tickers mentioned

• LDOS.US: closest scaled national-security technology and federal-services reference point; also illustrates shutdown-related revenue timing.
• BAH.US: federal consulting, cyber and AI competitor whose recent funding slowdown shows the downside of government-services exposure.
• PSN.US: higher-valued defense technology and infrastructure comparator used to frame the upper end of contractor multiples.
• SAIC.US: mature federal IT and engineering comparator illustrating the valuation CACI could approach if technology-led growth fades.
• PLTR.US: software-differentiated national-security boundary case showing why CACI should not receive pure-software valuation economics.

This report is based on public information and does not constitute investment advice. Markets carry risk; invest with caution.