Paradis
AI & Technology Investment Research
Wafer Works is gaining pricing power, but the pace of its earnings inflection is now uncertain. It has raised 6-inch wafer prices twice this year and is signalling further increases for 8-inch and 12-inch wafers in the second half, with customer negotiations ongoing, per the Taiwan Commercial Times. Legacy lines such as automotive still drag despite growth in GaN, SOI and 12-inch, monthly revenue is lumpy, and significant capex for the 12-inch expansion clouds timing. x.com
Wafer Works has several AI supply-chain products in sampling, and any one converting to volume qualification with customers like TSMC, onsemi, Texas Instruments, STMicroelectronics or Infineon would be significant. Square wafers are in validation for TSMC's CoPoS, SOI design-ins are done for silicon photonics and CPO, and it samples GaN for power supplies and SiC for packaging. FY2025 revenue rose 13%, and spinning out its SOI and GaN units shifts capacity toward AI customers from legacy autos. x.com
Silicon wafer makers GlobalWafers, SUMCO, Shin-Etsu and Siltronic face a price upcycle as AI demand meets locked supply. Per SemiAnalysis, sub-7nm logic epi-wafer demand nears 1 million a month by 2028, tightening faster than expected, while HBM's heavy wafer use absorbs the glut. The four's capex is about 30% of its 2023 peak and epi reactor lead times top six months, so new capacity arrives 2H27 at earliest; new epi contracts for 2028 could price about 20% higher. x.com
UMC has a meaningful re-rating path into 2H26-2028, with the target raised to NT$215 at 25x 2027 EPS. Worries about no 2H26 price hike miss that this year's hikes are selective, with broad 10-30% increases coming in 1Q27. Utilization should reach about 93% for 12-inch and 90% for 8-inch by end-2026, with full 8-inch loading by 2H27. From 2028, an asset-light 12nm FinFET model, likely driven by Apple display drivers, and optical solutions add growth, with TFLN EPS of NT$0.7 and NT$1.6 in 2027-28. … Show more
TSMC's leading-edge capacity just got scarcer, which should speed up its pricing power and drive a re-rating. Etched's $1B-plus of customer contracts is real wafer demand hitting a full queue, and its inference chip works on TSMC N4P after first-pass success. Inference scales with usage, not capex cycles, so more AI adoption means more N4P/N3 wafer starts. TSMC's 5-10% yearly advanced-node price rises are about to accelerate, which the Street is not modeling. x.com
Tower Semiconductor and UMC stand to benefit as 8-inch legacy foundry capacity tightens, another Macronix-style squeeze. Per @jukan05, UMC is raising 8-inch wafer prices 10-15%, with its Taipei and Xiamen fabs running at about 105-108% utilization, while 12-inch hikes are smaller at 5-10%. The same dynamic is playing out in E-glass. The bullish view on both foundries sits alongside a non-consensus bet on GlobalFoundries' photonics business, which won AMD's PIC order. x.com x.com
Hua Hong Semiconductor's capacity mix best fits a structural supply-demand reversal in mature-node foundry, with profits just turning up from the low. AI demand for power chips has pushed top foundries' 8-inch utilization toward 90%, per TrendForce, as TSMC and Samsung cut 8-inch capacity, while Taiwan foundries shift 12-inch lines to power parts, pushing customers to mainland China. Hua Hong is power-heavy and above 100% utilization. The tightening is gradual, peaking likely in late 2027. x.com
Soitec holds a near-monopoly on photonics-grade SOI wafers, the irreplaceable base for mass-produced silicon photonics in AI data centers, giving it 5x potential. SOI's oxide layer keeps light in the top silicon waveguide, and Soitec is the only supplier certified by TSMC, GlobalFoundries and Tower, with over 80% share. Revenue fell 22% year over year on customer destocking, and a CEO exit and withdrawn guidance are noise; 1.6T and CPO should drive the ramp over 2-3 years. x.com x.com
Soitec's Q1 shows its photonics wafer monopoly turning into growth. It makes the Photonics-SOI substrate under nearly every silicon photonics chip, from TSMC's COUPE to Applied Optoelectronics and Coherent transceivers and Nvidia and Broadcom CPO switches, with 95%+ share. Photonics-SOI sales doubled to over half the €65M Edge & Cloud AI segment. Revenue of €113M rose 23% at constant currency versus 15% guided, Q2 guidance is 30%+ versus 4% expected, and its Singapore 300mm fab qualified early. … Show more
UMC keeps delivering. Per a report shared by @dnystedt, its jointly developed 12nm FinFET process with Intel is set for mass production at Intel Arizona in 2027, and UMC sees a stronger second half of 2026 from price hikes on some processes and new orders, with broad price hikes likely in 2027 as materials costs rise. x.com
UMC has gained the leverage to raise chip prices as China/non-China supply-chain decoupling peaks, Nomura says. Customers moving volume to Chinese foundries have largely done so, cutting attrition risk, while TSMC's focus on leading-edge nodes deprioritizes mature ones. UMC has told customers it will adjust pricing in the second half on rising input costs and tight utilization, estimated at about 70% for 8-inch and 80% for 12-inch fabs in Q1, both seen above 80% from Q2. x.com
UMC's first high-volume silicon photonics shipment is the bottleneck-resolving traction expected from accessible foundries. TSMC's capacity discipline opens room for foundries advancing in specialty and optical technology, which is why UMC and GlobalFoundries are favored over TSMC. SILITH and UMC shipped the first mass-produced photonic IC wafers from UMC's Singapore 12-inch fab for a 1.6T platform, qualified by a leading cloud customer. UMC targets an open 12-inch platform in 2027. x.com
