WM: A Long-Term Owner's Perspective

Hunting ten-year five-baggers among great growth stocks — pressing the upside question: "Can it get much bigger?"

• QHow high is its market ceiling? Is it enlarging an existing pie, or creating an entirely new market?5/10

  A

  Conclusion first: WM is "enlarging a slice of an existing pie and migrating toward higher-margin adjacent pies," not creating an entirely new market. Its ceiling is set by the stacking of three factors—total U.S. waste volume, room for unit-price increases, and "migration of the profit pool toward recycling/renewable energy/medical waste"—which is very high and very durable, but grows at the high-single-digit pace of a mature industry rather than at disruptive, exponential speed. This must be stated honestly: measured by Baillie Gifford's "five-fold in ten years" yardstick, WM's TAM imagination is inherently constrained.

  Start with how big the pie itself is. The size of U.S. municipal solid waste (MSW) is a long-term stable base: EPA's Facts and Figures shows U.S. MSW generation of about 292.4 million tons a year, with a recycling-plus-composting rate of about 32.1% and roughly half still landfilled. This curve grows slowly with population and economic activity; it does not suddenly surge, nor does it disappear because of "reduction and recycling"—vast amounts of waste still must be collected, transferred, and ultimately disposed of. In other words, this is a huge, essential, but modestly growing pie.

  WM already holds the largest slice of that pie. The report notes the company owns North America's largest disposal network and collection fleet, with 257 landfills owned or operated as of the end of 2025 and expansion applications underway at 15 landfills. 2025 net operating revenue was $25.204 billion (WM's full-year 2025 results, revenue of about $25.2 billion), of which core Collection & Disposal alone was $20.704 billion. A leader keeps enlarging the pie mainly in three ways: mild but persistent price increases (the report says Q1 2026 adjusted EBITDA still grew year over year despite unfavorable weather, with margin expansion attributed to disciplined pricing), local M&A consolidation, and internalizing more waste into its own landfills (Q1 2026 internalization reached 71.7%). These are all "eating an existing pie more deeply and more efficiently," not opening a new market.

  What truly carries a hint of an "adjacent new market" is the migration of the profit pool toward recycling, renewable natural gas (RNG), and medical waste. The Healthcare Solutions segment added by the 2024 acquisition of Stericycle contributed $2.508 billion of net operating revenue in 2025, and in Q1 2026 that segment's Operating EBITDA grew 18.4% year over year (WM Q1 2026 results, Healthcare Solutions EBITDA growth of 18.4%). But see it clearly: medical waste and information destruction are themselves mature compliance markets, which WM entered by acquisition to grab existing share, not by creating unprecedented demand. RNG and recycling are the same—turning landfill gas and waste plastic already in hand into more valuable products, a case of "the same waste, higher value capture."

  So the ceiling is drawn like this: a large enough base (a North American environmental-services market on the scale of hundreds of billions of dollars), essential enough, durable enough, and, with slowly rising unit prices and an upward shift in profit structure, able to support long-term high-single-digit revenue growth. But it does not have the property of "creating an entirely new market where demand explodes from zero to one." For growth investors seeking a five-fold gain in ten years, this is the first part of WM's story to discount: the ceiling is very high, but the slope of ascent is gentle. On the market-ceiling dimension, its strength is durability and certainty; its weakness is the speed of expansion.

  Jun 11, 2026
• QCan its revenue at least double over the next five years? Is the growth driven mainly by volume, price, or new businesses?3/10

  A

  Conclusion first: doubling within five years is almost impossible. Doubling revenue would require roughly 15% five-year compound growth, whereas WM's actual engine runs at high single digits: net operating revenue grew from $17.931 billion in 2021 to $25.204 billion in 2025, a compound rate of about 8.9% (WM 2025 full-year revenue about $25.2 billion, 2024 about $22.1 billion). To be honest: by Baillie Gifford's "revenue doubling over the next five years" yardstick, WM clearly falls short—its growth is price-led, with weak volume, and new businesses add increments but not enough to change the order of magnitude.

  First, decompose the growth sources; this is precisely where WM's story differs most from a typical high-growth stock.

  Price (rate increases) is the main engine, and a high-quality one. Most customers of this business are compliance-driven rather than discretionary, which gives WM mild but persistent pricing power. In Q1 2026, despite unfavorable weather, revenue was $6.227 billion and the adjusted EBITDA margin still expanded to about 29.7% (WM Q1 2026 adjusted EBITDA margin 29.7%–29.8%), with management attributing the performance to disciplined pricing, cost optimization, and sustainability growth projects. The core revenue elasticity in the solid-waste industry has long come from annual price increases outpacing inflation, but this typically contributes mid-single-digits—not enough to support a doubling on its own.

  Volume (tonnage) is very weak, even periodically negative. Q1 2026 revenue of $6.227 billion actually came in slightly below market expectations; both the report and the results mention that last year's volume attrition weighed on revenue growth, and the company produced profit through cost management and synergies. U.S. total MSW grows at a low-single-digit annual rate, and the room to grab share in a stock market is constrained by antitrust and local tendering. So volume is a low-single-digit, occasionally contracting variable, not a driver of doubling.

  New businesses (Stericycle/medical waste + RNG + recycling) are the largest structural increment, but still not enough. Healthcare Solutions already contributed $2.508 billion of net operating revenue in 2025, and in Q1 2026 that segment's Operating EBITDA grew 18.4% year over year (WM Q1 2026 Healthcare Solutions EBITDA growth of 18.4%); RNG and recycling projects keep coming online (the report says Q1 2026 added nearly 300,000 tons of processing capacity). These are a real second curve that can lift the overall growth rate from "pure solid waste's mid-single-digits" up to "high single digits." But medical waste's $2.5 billion scale, even growing fast, is only a marginal accelerator to a $25.2 billion top line, unable to push the whole to 15%.

  Putting the three together for a conservative mental estimate: mid-single-digit price + low-single-digit volume (with swings) + fast-growing but small new business → high single digits overall, about 7%–9%. This matches the report's neutral assumption (mid-single-digit revenue growth in the core business + mild margin expansion) and management's capital-return framework—the company plans to return about 90% of free cash flow to shareholders via dividends and buybacks in 2026 (WM plans about $2 billion of buybacks in 2026 and raises the dividend for the 23rd consecutive year to $3.78 per share), which itself signals a "mature cash cow + harvest-phase return" rather than a "reinvest-every-cent-to-chase-a-doubling" high-growth machine.

  Conclusion: a five-year doubling is unrealistic; the reasonable expectation is cumulative five-year growth of about 40%–55% (high-single-digit compound). The growth structure is "price-led, new-business-accelerated, volume-weak." This is exactly WM's true nature as a defensive compounding asset—steady, but not fast.

  Jun 11, 2026
• QFive years from now, what will take over as the next growth engine? Does this "second curve" exist today?5/10

  A

  Conclusion first: the second curve already exists today and is already generating revenue, but these are "concentric, adjacent expansions," not a disruptive new engine that can shift the company into a higher gear. WM's likely successors five years out are still the three that are on the table today: medical waste and compliance services (Healthcare Solutions/Stericycle), renewable natural gas (RNG), and automation-upgraded recycling. They can extend the duration of high-single-digit growth and improve the profit structure, but none is of the scale that would "build a new WM from scratch." Be honest here—for Baillie Gifford's "where is the next growth engine," WM's answer is "a higher-quality version of the same business," not "an entirely new story."

  First, medical waste and compliance services—the most concrete second curve, and no longer a paper concept. The Healthcare Solutions segment formed by the 2024 acquisition of Stericycle contributed $2.508 billion of net operating revenue in 2025, the company's fourth-largest segment; in Q1 2026 that segment's Operating EBITDA grew 18.4% year over year and 11.6% on an adjusted basis (WM Q1 2026 Healthcare Solutions EBITDA growth of 18.4%, 11.6% adjusted). The growth logic is clear: smoother price increases after service recovery, room to compress an SG&A still in the high teens, and cross-selling on top. But its scale ($2.5 billion vs. the group's $25.2 billion) means it is an "accelerator," not a "gear shifter."

  Second, RNG (renewable natural gas) and landfill-gas power generation—a high-margin increment that monetizes existing assets. The Renewable Energy segment's 2025 net operating revenue was $478 million, still small, but its essence is "purifying the methane its own landfills already emit into sellable fuel and collecting environmental credits like RINs"—almost new cash flow squeezed out of sunk assets. The report lists it, together with recycling, as a payoff point in the company's "move from a heavy-investment phase into a harvest phase." This is a real second curve, but its profit is affected by RIN and energy-price swings—more elastic, and less certain than the core solid-waste business.

  Third, automation-upgraded recycling—a margin-improvement curve. The report discloses that in Q1 2026 the company brought new recycling facilities online in Ontario and Detroit and completed an automation project in South Florida, adding nearly 300,000 tons of processing capacity in total. Recycling used to be low-quality revenue dragged by material prices; automation and long-term contracts are reshaping it into a more stable processing-fee model—more a case of "making an existing business more valuable" than a new growth pole.

  Look at the essence of the three together: WM's second curves are all built on its existing physical assets (landfills, fleet, customers, network density), a vertical extension of the moat—high certainty, strong synergy, which is a virtue; but precisely because they do not depart from the core business, they cannot provide a new story, independent of the solid-waste cycle, that could multiply the valuation. This is consistent with the company's capital-allocation stance of "returning about 90% of free cash flow to shareholders in 2026" (WM plans about $2 billion of buybacks in 2026 and raises the dividend for consecutive years to $3.78 per share)—a company that returns the vast majority of its cash to shareholders is itself telling you it has no second curve that demands massive reinvestment and could re-create itself.

  Conclusion: the second curve exists, is visible, and is already contributing, able to extend the growth duration into the next decade—this is WM's solid part; but the claim of "taking over as the next growth engine and driving an order-of-magnitude leap" does not hold for WM, so temper the imagination.

  Jun 11, 2026
• QWhat is its core competitive advantage? Will this moat widen or narrow over the next three to five years?6/10

  A

  Conclusion first: WM's core competitive advantage is "a disposal-asset network that is hard to replicate in the real world"—scarce landfill permits + route density + vertical coupling of transfer stations with landfills—rather than brand or technology. Over the next three to five years, this moat will most likely stay stable to slightly widening, not narrowing. But distinguish honestly: its "width" is durability from a structural barrier, not the "ever-widening" kind of a consumer brand or a network platform that self-reinforces with scale and accelerates the gap.

  The real source of the moat is scarcity in the physical world. The report notes WM is North America's largest disposal network and collection fleet, with 257 landfills owned or operated as of the end of 2025, a weighted average remaining life of about 38 years across all owned/operated landfills, and expansion applications underway at 15 landfills. Landfill scarcity is the bedrock of this moat—new construction or expansion takes a long time, faces heavy political resistance, and has high community-opposition rates, which means existing permits are themselves an asset that capital cannot quickly buy. By comparison, Republic Services had about 207 active landfills in the same period, and Waste Connections calls itself North America's third-largest solid-waste company; the profit pool is highly concentrated among the few players that simultaneously hold "disposal assets + collection networks + regional density."

  Cost/density advantage is the second layer of the moat, and it keeps delivering. In Q1 2026 the company's internalization of waste reached 71.7%—meaning more than seven-tenths of the waste collected enters its own landfills and transfer system, direct evidence that vertical integration lowers unit cost. The higher the density on a given route and the more waste internally absorbed, the lower the marginal cost, a "scale-density positive feedback loop" that latecomers cannot match with single-point investment. This advantage shows up financially as continually expanding margins: WM's Q1 2026 adjusted EBITDA margin of about 29.7%–29.8% still expanded despite unfavorable weather.

  Permitting and regulatory barriers are the third layer, and they are double-edged. Landfill expansion is hard and new construction is hard, which helps WM fend off the vast majority of new entrants; the report also notes that precisely because replication is not as simple as "buying trucks"—one must simultaneously secure landfill permits, a transfer network, a fleet, route density, a customer base, regulatory relationships, and long-term closure/post-closure funding arrangements—a competitor's more realistic path is acquisition or gradual local penetration. On the books, at the end of 2025 there were $20.378 billion of net property, plant, and equipment, $13.880 billion of goodwill, and $3.767 billion of net intangible assets, but much of the truly valuable scarce permits and optimized route networks is not fully reflected on the balance sheet.

  Why I judge it "slightly widening rather than narrowing" over the next three to five years: first, existing landfill life is as long as 38 years and expansion applications are underway at 15 sites, so supply scarcity on the disposal side is deepening rather than loosening; second, automation and digital dispatch (the report says Q1 2026 added nearly 300,000 tons of recycling processing capacity) are strengthening execution efficiency, a marginal reinforcement of the moat; third, tightening regulation (PFAS, methane, EPR) broadly raises industry entry thresholds, which is relatively favorable to an already-compliant leader.

  But give three honest limiting conditions to avoid overstatement: first, switching costs are only "moderate"—commercial and municipal customers changing providers need re-tendering and route switching, with friction but not lock-in; second, the brand is only "moderate" and is not a source of pricing power for consumers; third, the speed at which this moat widens is gradual and linear, without the "winner-take-all, exponential-gap" mechanism of platform businesses.

  Conclusion: the moat is strong (the report gives 4.5/5 and I agree on direction), centered on hard-to-replicate physical assets and permits, stable to slightly wider over the next three to five years. Its excellence lies in "durability," not "accelerating expansion"—which is exactly why WM is classified as a high-quality defensive asset rather than a high-slope growth stock.

  Jun 11, 2026
• QIf its core business were disrupted, does it have the DNA to reinvent itself? How does it handle mistakes and bad news?5/10

  A

  Conclusion first: the probability of WM's core business being "instantly disrupted" is extremely low, so the crux of the question is not "will it be disrupted" but "when the profit pool slowly migrates, does it have the DNA to migrate with it"—and the answer is yes, and it has been verified; as for handling mistakes and bad news, management is broadly candid, disclosing critical accounting estimates and integration difficulties, but the governance is "professional-manager + strong incentives" rather than founder-style deep alignment, so the drive to correct errors is institutional rather than an owner's instinct. This question calls for honestly translating "disruption" into the real form WM faces.

  First, the real form of disruption: a migration of the profit structure, not a failure of the business model. The report's judgment is accurate—technology, regulation, and consumer habits (more recycling, EPR, food-waste processing, PFAS, greenhouse-gas regulation) will change the economics, but such changes are gradual and will not make landfilling and collection vanish overnight. The underlying demand is confirmed by EPA data: U.S. MSW generation of about 292.4 million tons a year, with roughly half still landfilled. So what WM faces is not "the core business being disrupted" but "the profit share of landfilling declining and the profit share of recycling/RNG/medical waste rising."

  The DNA to reinvent itself: already proven with real money. The hardest evidence of whether a company has the DNA to "migrate proactively before the core is eroded" is whether it is willing to invest cash toward new directions that will cannibalize its own existing profits. WM did three things: first, it invested heavily in recycling and RNG—actively converting "landfill profit," which regulation and reduction trends would otherwise weaken, into "new cash flow squeezed out of landfill gas and waste materials"; second, in 2024 it spent heavily to acquire Stericycle and enter medical waste wholesale, opening a curve not fully synchronized with the traditional solid-waste cycle, which contributed $2.508 billion of net operating revenue in 2025; third, it continues to upgrade recycling facilities with automation. These three steps are exactly the behavior of "moving capital to a new profit pool before the old one peaks"—empirical proof of the reinvention DNA, not a slogan.

  Handling mistakes and bad news: candor passes the bar, but see both sides. On the positive side, the report discloses that on the Q1 2026 call management proactively acknowledged that Healthcare Solutions' SG&A is still in the high teens, still short of the legacy solid-waste business's efficiency, without glossing over the integration difficulty; the annual report explicitly lists landfill airspace, closure/post-closure obligations, environmental remediation, and the fair value of acquired assets as critical accounting estimates, putting the uncertainty on the table. This shows a willingness to expose problems rather than hide them. Q1 2026 net income still grew 13.5% year over year to $723 million (WM Q1 2026 net income growth of 13.5% to $723 million), showing that while candidly acknowledging difficulties, execution has not stalled.

  But give two honest reservations. First, the acquired Stericycle historically had hazardous-waste compliance issues, and the EPA/DOJ disclosed a settlement over its past violations in 2025—a reminder that "bad news" need not all come from WM itself, and that integrated assets may bring in tail risk. Second, on governance, the report notes that all directors and current executive officers combined still hold less than 1%, not a structure of deep founder-shareholder alignment; CEO Jim Fish's personal ownership requirement reaches 50x base salary and about 91% of total pay is performance-linked, so the incentive direction is right, but the fundamental drive to correct errors comes from the pay contract and board accountability rather than the owner's instinct of "my own money is in it."

  Conclusion: disruption risk is low; the reinvention DNA is documented (capital already migrated toward recycling/RNG/medical waste); the attitude toward mistakes and bad news passes the bar for candor. But governance is not the deeply-bound founder type, and integrated assets bring in compliance tail risk—these two points mean WM's "resilience" is more a product of excellent institutions and cash flow than of a founder-style extraordinary error-correcting culture.

  Jun 11, 2026
• QDoes management (especially the founder) have a long-term vision, with interests deeply aligned with the company? Are they willing to sacrifice current profit for five to ten years out?4/10

  A

  Conclusion first: WM is a "professional-manager + fairly strong performance incentives" governance structure, not a deeply founder-aligned one. Management's long-term vision and capital discipline are broadly adequate and trustworthy, and it has indeed done things that "sacrifice current profit for five to ten years out"; but all directors and current executive officers combined hold less than 1%, so the degree of alignment with the company is far below the founders/heavily-invested insiders that Baillie Gifford favors. This is a clear structural shortcoming of WM under the Baillie Gifford framework, and it must be stated as it is.

  First, look at alignment strength—this is where honesty matters most. The report discloses that CEO Jim Fish's personal ownership requirement reaches 50x base salary, far above the company's 6x base-salary ownership guideline for the CEO; that number is directionally solid. But the report also points out that all directors and current executive officers combined still hold less than 1%. Only reading the two together is accurate: the executives' personal incentives are not weak and their interests align with shareholders, but in terms of "absolute proportion of the company held," this is not a structure of "a founder staking his fortune in the company" but of "professional managers receiving large equity incentives." The "founder-style, sink-or-swim-with-the-company" trait that Baillie Gifford prizes most is absent at WM. This should not be overstated just because "50x salary" sounds impressive.

  Next, look at whether the pay structure aligns with the long term. The proxy shows about 91% of the CEO's total pay is performance-related, meaning a low fixed-base proportion and value creation tied to returns—the structure's direction is right and can substantially curb the motive to "sacrifice the long term for short-term numbers." But be clear: performance pay aligns with "metrics within the assessment period," which is still fundamentally different from a founder's intrinsic motive of "treating the company as a lifelong endeavor."

  "Willing to sacrifice current profit for five to ten years out"—there is evidence, and it leans positive. This is the hardest standard for judging long-term vision, and WM offers several pieces of evidence that hold up: first, continued large reinvestment in recycling and RNG—in 2025 the company separately classified $633 million of capex as "sustainability growth investments," projects that depress free cash flow in the short term with returns to be realized over the coming years, a classic case of "sacrificing the present to position for the future"; second, in 2024 it spent heavily to acquire Stericycle, knowing that Healthcare Solutions' SG&A is still high and margins would take years to reach solid-waste levels, yet willing to bear the integration pain to buy a second curve. These show management is not the short-sighted type fixated only on quarterly EPS.

  Capital-allocation discipline—rational, restrained, shareholder-friendly, but not Buffett-style. In December 2025 the company announced the 2026 annualized dividend would rise to $3.78 per share, its 23rd consecutive year of increases, while adding a $3 billion buyback authorization, planning about $2 billion of buybacks for the year, and returning about 90% of free cash flow to shareholders via dividends and buybacks (WM plans a 14.5% dividend increase to $3.78, a new $3 billion buyback, and about $2 billion of buybacks in 2026), with a leverage target maintained at 2.5x–3.0x. Twenty-three consecutive years of dividend increases is an extremely strong signal of discipline. But I fully agree with the report's conservative assessment: large-scale buybacks when the valuation is not low are closer to "capital return" than "high-odds investment"—this is not the Buffett-style discipline of buying back at a low price and levering up per-share intrinsic value. With WM's stock at about $224 and a market cap of about $90.1 billion (WM's stock price about $224.28 and market cap about $90.1 billion on June 10, 2026, note: the market cap is actually on the order of ~$90.1 billion), spending $2 billion a year on buybacks at this level helps per-share value less than buybacks during undervalued periods would.

  Conclusion: management is trustworthy, its long-term vision passes, there is evidence of sacrificing the present for the future, and capital allocation is rational and shareholder-friendly (the report gives 4/5, which I agree with). But on Baillie Gifford's core preference for "deep founder alignment," WM clearly does not qualify—insiders combined hold less than 1%, and the drive for error correction and long-termism comes from institutions and incentives rather than an owner's instinct.

  Jun 11, 2026
• QIf it disappeared tomorrow, how much would customers miss it? Is its way of growing sustainable and not reliant on harming society or regulation?6/10

  A

  Conclusion first: if WM disappeared tomorrow, customers would miss it "immediately, intensely, and with no substitute"—waste collection and disposal is a compliance necessity, and once interrupted, the normal functioning of cities and businesses would quickly grind to a halt; at the same time, its way of growing is built on "making society cleaner and more compliant," so its relationship with regulation is mutually reinforcing rather than harmful, and its sustainability is strong. This is WM's most solid, highest-scoring question on Baillie Gifford's dual standard of "indispensability + social/regulatory sustainability." No discount is needed here, but argue the two dimensions separately.

  First dimension—indispensability: extremely high, and at the "physical necessity" level. The customer base is highly fragmented—residential, commercial, industrial, public-sector, and healthcare customers—and the report notes the largest customer accounts for less than 5% of revenue, with no single-point dependence. The key is that the vast majority of these customers are not "discretionary spending" but "compliance necessity": waste must be collected by someone and disposed of legally, or it becomes a public-health incident and a violation of the law. The report accurately notes this gives revenue natural recurrence and renewal. The underlying demand is confirmed by EPA data: U.S. MSW generation of about 292.4 million tons a year, with roughly half still landfilled—a flow of waste that happens every day and cannot be paused. And WM is North America's largest disposal network (257 landfills and the largest collection fleet as of the end of 2025); in many regions customers simply cannot find a substitute of comparable scale and density: landfill permits are scarce and route networks must be built from scratch. So the "degree of missing it" is not merely high but "no one can fill the gap in the short term."

  The medical-waste dimension is especially so. Healthcare Solutions' 2025 net operating revenue was $2.508 billion, handling infectious/hazardous waste from hospitals and clinics—a legally mandated service with extremely high professional-qualification thresholds that customers cannot do without for a moment.

  Second dimension—social and regulatory sustainability: the way it grows is aligned with the public interest and does not trade harm to society for growth. This is what sets WM apart from many companies whose growth relies on regulatory arbitrage or externality shifting. Its core business is disposing of waste safely, returning recyclables to the loop, and purifying landfill methane into renewable natural gas—the more it grows, the better the social and environmental situation, a "positive-externality" business. Regulation is two-way for WM: the report accurately notes that regulation is both a barrier (landfill expansion is hard and compliance thresholds are high, helping fend off small players) and a source of risk (tighter rules on PFAS, methane, EPR, hazardous and medical waste raise costs). But even the risk side is essentially "requiring it to be more environmentally sound and more compliant," not "profiting by harming the public and sooner or later being cleaned out by regulators"—directionally aligned with social interests, and highly sustainable.

  Give one honest reservation, though it does not change the conclusion: the acquired Stericycle historically had hazardous-waste compliance violations, and the EPA/DOJ disclosed a settlement in 2025. This shows that once compliance goes wrong in this industry, regulatory penalties are real; but that conversely confirms "compliance is the moat"—operating cleanly and compliantly over the long run is itself part of indispensability. The company currently operates soundly, with Q1 2026 net income up 13.5% year over year to $723 million (WM Q1 2026 net income growth of 13.5%), and no sign that its growth relies on regulatory arbitrage or externality shifting.

  Conclusion: indispensability is extremely high (physical necessity + a hard-to-substitute disposal network), and social/regulatory sustainability is strong (a positive-externality business aligned with regulation). This is the hardest-quality item across all ten questions and the one that best withstands Baillie Gifford's scrutiny—and the fundamental reason it deserves the "high-quality defensive asset" positioning.

  Jun 11, 2026
• QWhat are this business's unit economics (gross margin, incremental returns)? Do they get better or worse as it scales? Where does the money earned go?5/10

  A

  Conclusion first: WM's unit economics are the "asset-heavy, cash-rich, steadily improving" type—it has no software-like 70%+ gross margin, but with density economics and vertical integration, the larger it gets the lower its marginal cost and the more its margins keep expanding; incremental returns (ROIC) are only high-single-digit to low-double-digit—not extremely high, but already solid for an infrastructure-type business; the money earned goes mainly to maintaining assets, a small amount of growth investment, and large shareholder returns. This question calls for avoiding two errors: neither belittling it with a SaaS yardstick nor misreading "strong cash" as "extremely high incremental returns."

  Gross margin/margins: steadily rising, and structurally so. WM's profitability metrics keep improving: the GAAP operating margin rose from about 16.5% in 2021 ($17.931 billion revenue / $2.965 billion operating profit) to about 18.4% in 2024; the Q1 2026 operating margin of about 17.9% was higher than Q1 2025's about 16.8%. More reflective of unit economics is the EBITDA margin—the Q1 2026 adjusted EBITDA margin of about 29.7%–29.8% still expanded year over year despite unfavorable weather (WM Q1 2026 adjusted EBITDA margin 29.7%–29.8%, expanding year over year), and full-year 2025 EBITDA grew 13.3% to $7.17 billion (WM full-year 2025 EBITDA growth of 13.3% to $7.17 billion). Management attributes the margin improvement to disciplined pricing + cost optimization + sustainability growth projects, and the report judges this "structural operating improvement" rather than an incidental tailwind—which I agree with.

  Better or worse as it scales: clearly "better," but with a ceiling. This is the most crucial feature of WM's unit economics. Q1 2026 internalization of waste reached 71.7%—over seven-tenths of the waste enters its own landfills and transfer system; the higher the density and the more internally absorbed, the lower the unit disposal cost, which is the positive feedback that scale brings. The report accurately calls it a "scale-density positive feedback loop." So WM is not a diseconomies-of-scale business but one that gets cheaper as it grows. But be honest: this scale effect is driven by "local-market density," and as an established leader its marginal room for improvement is narrowing, without the "double the scale, cliff-drop in cost structure" explosiveness of platform businesses.

  Incremental returns (ROIC): high-single-digit to low-double-digit, solid but not extremely high. The report judges that "on a rough estimate from 2025 profitability and capital structure, operating ROIC sits roughly in the high single digits to low double digits," and explains that heavy buybacks, goodwill, and large acquisitions make the accounting equity base unclean and inflate ROE, so it looks more at ROIC and cash returns. This magnitude is already respectable for an asset-heavy, utility-like business, but be clear: it is far below the incremental returns of asset-light high-growth stocks. This is exactly WM's financial character as a "compounding asset" rather than a "growth-explosion stock"—steadily reinvesting capital at high-single-digit returns and accumulating through time and returns, rather than magnifying quickly on extremely high ROIC.

  Where the money goes: mostly maintenance, some growth investment, the bulk returned to shareholders. 2025 operating cash flow was $6.043 billion and capex $3.227 billion, of which $2.594 billion was "support the business" (maintenance) and $633 million was "sustainability growth investments" (recycling/RNG growth investment). The bulk of the remaining cash is returned to shareholders—the company plans to return about 90% of free cash flow via dividends and buybacks in 2026, raising the dividend for the 23rd consecutive year to $3.78 per share and planning about $2 billion of buybacks (WM plans about $2 billion of buybacks in 2026, raises the dividend for consecutive years to $3.78 per share, and returns about 90% of free cash flow). This allocation structure itself tells you the nature of the unit economics: a mature, cash-abundant business with limited reinvestment needs returns the vast majority of its cash to shareholders.

  Conclusion: the unit economics are "heavy but steady, cheaper at scale, extremely strong on cash"; gross margin trails software but the EBITDA margin is near 30% and keeps expanding; incremental returns are high-single-digit to low-double-digit—solid but not extremely high; cash goes mainly to maintaining assets and shareholder returns. These are textbook high-quality cash-cow unit economics, but not the growth-type unit economics that can compound wildly through reinvestment on high incremental returns.

  Jun 11, 2026
• QFor it to rise five-fold in ten years, what conditions would have to hold simultaneously? Are they realistic? What does today's share price imply about expectations?2/10

  A

  Conclusion first: WM rising five-fold in ten years is almost unrealistic. A five-bagger requires about a 17.5% annualized total return for ten straight years, whereas its fundamental engines are high-single-digit revenue growth and mild margin expansion, plus a roughly 4% shareholder-return yield—putting the reasonable total-return midpoint at 7%–9%; reaching 17%+ requires multiple optimistic conditions to hold at once, and one of them (large valuation expansion) directly contradicts today's already-elevated starting point. Today's share price implies "high-quality defense, certainty delivered," not "high-speed growth." This is where WM most deserves a cold splash of water under the Baillie Gifford framework, and it must be calculated clearly.

  First, decompose the five-fold into conditions that must hold simultaneously. Five-fold in ten years ≈ 17.5% annualized total return. For a mature cash cow like WM, return sources are only three: earnings/cash-flow growth + shareholder return + valuation change. To reach 17.5% roughly requires:

  • Condition one: Owner Earnings/free cash flow compounding at about 8%–10% for ten straight years (landing in the report's optimistic scenario: a $3.9 billion base with 8% first-five-year growth). This requires Stericycle synergies to deliver fully, RNG/recycling to keep growing fast, and core price increases to keep outpacing inflation—possible, but an optimistic stack.
  • Condition two: about 4% dividend + buyback yield contributing every year (the company indeed has this ability, planning to return about 90% of free cash flow in 2026, raising the dividend for consecutive years to $3.78 and planning about $2 billion of buybacks). This one is relatively realistic.
  • Condition three: valuation does not contract, or even expands. This is the most fatal one—see below.

  Adding the realistic condition one (about 8%) and condition two (about 4%) gives a long-term total-return midpoint of about 12%, already a fairly friendly assumption; pushing further toward 17.5% can only come from further valuation uplift. And that is exactly the least likely.

  What today's share price implies: it has already front-loaded a good deal of the good news, leaving almost no room for "valuation expansion." The current WM price is about $224.28 and market cap about $90.1 billion (WM about $224.28 on June 10, 2026, market cap on the order of ~$90.1 billion), and against FY2025 diluted EPS of $6.70 (WM FY2025 diluted EPS of $6.70, revenue on the order of ~$25.2 billion) the trailing P/E has already reached about 33x—even more expensive than at the report's snapshot point ($217.9, P/E 31.5x). Against the company's 2026 free-cash-flow guidance of $3.75 billion–$3.85 billion, the current market cap implies an equity free-cash-flow yield of only about 4.2%–4.3%, merely on par with or even below the 10-year Treasury risk-free rate of about 4.55%. This means the market has already priced in "quality, defense, improving cash flow, Stericycle synergies, and continued buybacks and dividends"—the report's neutral intrinsic-value top ($185–210) has even been surpassed by the current price. In other words, today's price implies "everything delivers optimistically, and the market is willing to keep a valuation above 30x for the long run."

  Why this makes five-fold unrealistic: the valuation leg is most likely a headwind, not a tailwind. From a 33x starting point, if the valuation reverts in ten years to a more normal 22–25x for a defensive stock, that alone drags the total return by about 3%–4% a year. That is, even if the fundamentals deliver on the optimistic scenario (conditions one and two both hold), valuation contraction would cut the total return from 12% to around 8%–9%—far from 17.5%. The report's "strongest bear logic" puts it well: even holding an excellent business, starting from a high valuation can produce only mediocre returns.

  Conclusion: five-fold in ten years requires "optimistic growth + sustained high returns + valuation rising rather than falling" all to hold at once, and the third directly clashes with today's starting point of about 33x P/E and about 4.2% free-cash-flow yield, so it is unrealistic. Today's share price implies a "certainty premium," leaving investors with a high-quality medium return (midpoint 7%–9%), not a growth stock's explosive return. This is fully consistent with the report's conclusion of "Watch, insufficient margin of safety, ideal buy price $160–180."

  Jun 11, 2026
• QWhy hasn't the market realized all this yet? Is it that they can't understand it, look down on it, or can't see far enough? What could become the "narrative inflection point"?3/10

  A

  Conclusion first: for WM, Baillie Gifford's question of "why hasn't the market realized it" has to be answered in reverse—the market has not "failed to realize it"; it has "realized it all too well." WM is a high-quality defensive asset that is thoroughly researched and fully priced; its current mispricing (if any) is not "cheap and unrecognized" but "expensive in unusually broad agreement." This is the exact opposite of Baillie Gifford's typical "can't-understand/look-down-on/can't-see-far" mispriced targets, and it must be honestly acknowledged—on this question WM has no dividend from an undiscovered cognitive gap.

  First, address the three mispricings—"can't understand it, look down on it, can't see far enough"—directly; WM has none of them.

  • Not "can't understand it": this business is highly understandable, and the report gives business understandability 5/5. Collecting waste, transferring, landfilling, recycling, making RNG, handling medical waste—the business model is straightforward, financial disclosure is transparent, and brokerage coverage is broad. Currently 19 analysts give a buy rating with an average target of about $256 (WM currently has 19 analysts with a buy rating and an average target of about $256). This is a stock that has been understood repeatedly, with a full consensus.
  • Not "look down on it": the market thinks quite highly of it—awarding about a 33x trailing P/E and nearly 30x P/FCF. A disdained cheap stock would not carry such a valuation.
  • Not "can't see far enough": 23 consecutive years of dividend increases and stable long-term cash flow are exactly the story long-term investors love to tell; the market sees its "far" quite clearly, having even front-loaded years of future improvement.

  So what has the market "realized," and did it "price it right"? The market has priced in all of WM's strengths—North America's largest disposal network, 71.7% internalization, pricing power, Stericycle synergies, RNG/recycling harvest, and consecutive dividend increases and buybacks. On a cross-sectional basis, WM is not uniquely expensive: the current trailing P/E is about 33x, versus Republic Services at about 30x and Waste Connections at about 38x; using market cap / most-recent-full-year free cash flow, WM is about 31x ($90.1 billion / $2.94 billion), RSG about 27x (market cap to 2025 adjusted free cash flow of $2.43 billion), and WCN about 33x (to 2025 adjusted free cash flow of $1.26 billion). The entire industry is bid up as a "scarce defensive asset"—the report is right: when an entire industry is expensive, "not as expensive" does not automatically constitute a margin of safety. So the market's "awareness" is full and somewhat hot, and there is no undervaluation waiting to be discovered.

  Where the real cognitive gap is (if any): not in "company quality" but in the disagreement over "how long this high valuation premium can last." The only thing that qualifies as a cognitive disagreement is the differing judgment between bulls and bears on "whether the market is willing to keep a 30x-earnings / about-4.2%-free-cash-flow-yield valuation on a defensive asset over the long run"—which has almost no risk compensation over the 10-year Treasury at about 4.55%. Bulls think the certainty deserves the premium; bears think mean reversion will eventually compress the valuation. This is a disagreement at the valuation level, not a fundamental information gap.

  What could become the "narrative inflection point"—possible in both directions. Since WM's story is fully priced, what would truly change the share-price narrative is "unexpected" marginal change:

  • Upside inflection: Stericycle/Healthcare Solutions margins improving faster than expected (that segment's EBITDA already grew 18.4% in Q1 2026, WM Q1 2026 Healthcare Solutions EBITDA growth of 18.4%, and sustained upside surprises would reinforce the "second curve" narrative); a sharp rise in RNG/RIN prices; or a marked decline in rates lifting the market's valuation tolerance for stable-cash-flow assets.
  • Downside inflection (more worth guarding against, since the starting point is already expensive): the valuation premium contracting—if the market's appetite for high valuations on defensive assets cools and it compresses the P/E from 30-plus toward 22–25x; or Stericycle integration stumbling and compliance costs rising; or landfill airspace/expansion permits being blocked and closure/post-closure liabilities being remeasured. The report accurately notes that what the market compresses first is not business quality but the valuation premium—from a $224 starting point, a 30%–40% drawdown would come not from a business collapse but from mean reversion after buying at a high price.

  Conclusion: WM does not fit Baillie Gifford's "market hasn't realized it yet" paradigm—it is a high-quality asset that is fully recognized and fully (even somewhat hotly) priced. There is no dividend from an undiscovered cognitive gap; what would truly change the narrative is the pace of Stericycle delivery, interest rates, and—most crucially—the valuation variable of "whether the high valuation premium on defensive stocks can hold." At the current price, the risk of a downward narrative inflection is at least no lower than an upward one.

  Jun 11, 2026