AI Advanced Packaging
All research in AI Advanced Packaging — 7 reports.
Powertech Technology is a Taiwan-based memory OSAT built around packaging, testing, and module services, with a current push into FOPLP and HBM-related advanced packaging. Q1 2026 gross margin of 19.4% and EPS of TWD 2.5 confirm a cyclical turn, but capex has been raised to TWD 50 billion and the stock trades near 40x earnings, far above its historical 13–21x range. Report rating Watch: the cycle improvement is real, direct HBM evidence remains insufficient, and the ideal buy zone is TWD 180–220.
JCET is a top-three global OSAT provider, with a post-STATS ChipPAC footprint spanning China, Singapore, South Korea, and a global customer base. Revenue reached a record RMB 38.871 billion in 2025, but net profit attributable to shareholders fell 2.75% year on year to RMB 1.565 billion, while RMB 10 billion of 2026 capex continues to consume free cash flow. Research rating Watch: the advanced-packaging option is real, but it is not enough to offset heavy capital intensity and front-loaded valuation, with an ideal buy range of RMB 28–36.
A major mainland China OSAT provider, Tongfu is deeply tied to AMD through its Suzhou and Penang joint-venture plants, accounting for more than 80% of AMD's related products. Revenue reached RMB 27.921 billion in 2025 and net profit attributable to shareholders reached a record RMB 1.219 billion, but recurring net profit was only RMB 841 million and recurring PE is above 110x. Research rating Watch: AMD-linked demand is materializing quickly, but recurring earnings and the margin of safety have not caught up with the share price, leaving the ideal buy range at RMB 28 to 36.
SÜSS MicroTec is a Germany-listed semiconductor equipment company focused on temporary bonding and debonding, UV exposure, coating and development tools for advanced packaging, plus photomask cleaning and handling systems. The core thesis is that AI chips and HBM create real long-term demand for its Advanced Backend Solutions business, but 2025's record €503.2 million in sales came with negative free cash flow and management defines 2026 as a transition year. Rating Watch: a quality cyclical business with credible niche barriers, but the current price already discounts too much future success.
The world's second-largest and the largest U.S.-listed OSAT packaging-and-test house, with advanced packaging (HDFO/2.5D) at roughly 83% of revenue, an AI advanced-packaging portfolio guided to roughly triple in 2026, and Arizona as the only at-scale advanced-packaging capacity on U.S. soil (CHIPS Act subsidy, co-located with TSMC, anchored by Apple and Nvidia). This is a capital-heavy cyclical business running just 14% gross margin and about 6% operating margin, with Apple at roughly 30% of revenue. Rating Watch: a real strategic foothold bought right at the start of a capital-devouring phase, with the market already pricing in zero upside.
Besi is a leading back-end advanced packaging equipment company, with about 82% share in die attach and exceptionally strong through-cycle cash-flow quality. The core thesis is that the business is excellent, but at the publication-time price of €288.4, it trades at roughly 151x LTM P/E and about 128x Owner Earnings, already discounting a large amount of future growth. Report rating Watch: the ideal buy range is €60-90, with key risks including slower-than-expected hybrid bonding ramp, customer concentration, and a collapse in high valuation multiples.
The real bottleneck in AI chip supply is the compound scarcity of high-end HBM, CoWoS / large-format advanced packaging, N3 / HBM base die, and test/probe capacity. The most certain revenue and margin upside sits with HBM makers, TSMC's 3DFabric, and test and hybrid-bonding equipment leaders. Rating Watch: track TSMC, SK hynix, Micron, ASE, Advantest, BESI, Samsung, Broadcom, FormFactor, and Unimicron, while treating ABF / glass substrate / broad AI PCB names as sympathy plays that still need orders and disclosed breakouts.