Ajinomoto, like Nittobo, is too conservative and cares too much about customer relationships and market share to exploit its pricing power. Despite a severe shortage of high-end glass fiber for AI servers, Nittobo says it has no plans to raise T-glass prices and will instead expand capacity to defend share, which is why its stock has moved sideways. Unlike memory companies aggressively raising prices, these Japanese suppliers are leaving profits on the table. x.com 

Japanese materials and component suppliers will inevitably cede share to China because they are too cautious about expanding capacity. Sinocera said its key raw materials for high-end MLCCs passed qualification at some customers; those customers may keep using Chinese suppliers through a downcycle, increasing pressure on Japanese firms. Taiwanese stocks are more attractive than Japanese materials and components plays; unlike Chinese firms, Taiwanese companies expand capacity and return capital. … Show more

Ibiden is overpriced and set to lose market share, so AT&S, Kinsus and Ajinomoto are the better substrate positions. This runs against FundaAI (@FundaAI), which argues that high-end ABF capacity is failing to keep pace with AI silicon and sees rerating room for Ibiden at about 45 times FY3/28 earnings. x.com 

Unimicron should benefit from a persistent AI ABF substrate shortage and a shift toward higher-end products. Its projected share exceeds 30% as the market reaches $13bn/$18bn in 2027/28; added capacity is expected to lift ABF revenue 66%/90%. Higher-end ABF, mSAP and LPDDR lift margins, supporting 77% EPS CAGR. Initiate Buy with a NT$1,820 target at 30x 2027 earnings. x.com 

Nittobo's stock is stuck sideways because it will not raise prices despite a severe T-glass shortage. Per Japanese media reports, management plans no further price increases on low-thermal-expansion glass fabric and will instead accelerate capacity in Fukushima and Taiwan to defend market share. Unlike memory makers aggressively raising prices, Nittobo is too conservative and cares too much about customers, which is a reason not to own it. x.com  x.com 

Ajinomoto, Nittobo, Ibiden and AT&S sit in an ABF substrate supply chain consolidated into near-monopolies, where the AI chip bottleneck keeps moving. Nvidia, Intel and AMD are prepaying for suppliers' factories, with Ibiden receiving over 90 billion yen; companies that size do not prepay unless out of options. Ajinomoto holds over 95% of the substrate film market, and Apple, Nvidia and Google are chasing Nittobo's glass fabric. A capex cycle ending in overcapacity is the risk. x.com  x.com 

ASE Technology's packaging tightness now extends beyond AI to analog and mature-node chips, supporting price hikes. Lead times are up over 30%; FC/Wirebond/QFN hikes of 10–80% and CoWoS hikes of 10–20% are expected in 3Q–4Q26. Higher AMD server CPU wafer allocation, CoWoS adoption for Venice, Verano and future AMD CPUs, and limited competition support LEAP growth. LEAP revenue is forecast at US$4bn/$8bn in 2026/27, above guidance. The target rises to NT$843 from NT$754 on 25x 2027E EPS. x.com 

Dongjin Semichem and LG Chem could be de-cyclicalized by AI. Materials science and specialty chemistry score very high on end-market and intelligence-level convexity in a framework for ranking AI beneficiaries, and these South Korean leaders currently trade as cyclicals near trough valuations. They are preferable to the two European players in the field. x.com  x.com 

Broadcom's valuation is likely to price in margin compression even if its actual margins hold, because squeezing leading suppliers' margins is the core aim of its four big customers. Chips are now production tools for cloud providers, so saving money is making money, and they shift to lower-margin second suppliers wherever they can. Real shortages make that hard near term, but the market prices it in early, as with Nvidia's 12x P/E. Trading can diverge from fundamentals. x.com  x.com  x.com  x.com 

Shin-Etsu Chemical is shifting from a chemical conglomerate to a chip-supply bottleneck, owning lithography and chemistry patents essential to the glass-substrate era. In 1,000W+ AI data centers glass is already required, as organic substrates warp and crack under the heat of Nvidia's Rubin systems. Intel and Samsung have moved pilot lines into volume production, with Shin-Etsu supplying bonding chemistry and masks. Cyclical PVC cash funds its electronics push, supporting a re-rating. x.com  … Show more