TSMC posted record profit and raised 2026 capex to $60–64B — and the AI-hardware chokepoint sold off anyway, with the wafer, memory and optical-interconnect layer routed as the Sox fell 4.3%.

Leadership was defensive and thin. Ecolab (ECL) rose 2.0% to $275.71 — not a chip name but the datacenter water-and-cooling chokepoint, with its ~$4.75B CoolIT liquid-cooling acquisition guided to close in Q3; alongside Microsoft (MSFT) +1.4% to $401.10, it was one of the only green marks in a basket where the demand-side proxies held and the supply-side plumbing broke. That split — buyers of compute steady, makers of the picks sold — was the entire session.

The laggard was Sumco (SUOPY), the silicon-wafer-substrate maker, down 9.2% to $55.37 — the most upstream link in the chain, and the one that led down even as TSMC reported record Q2 profit and lifted full-year capex to $60–64B from a prior $52–56B. The record print and the higher spend should have been the bull case; instead the market read stretched expectations rather than weak results, and sold the wafer-and-memory tier first.

The interconnect-and-memory layer took the brunt. Micron (MU) fell 5.6% to $853.20, Marvell (MRVL) 8.7% to $188.30, Credo (CRDO) 8.3% to $207.97 and Applied Optoelectronics (AAOI) 8.1% to $100.24 at the optical chokepoint, with Broadcom (AVGO) −5.0% to $374.45 and TSMC's own ADR −2.3% to $409.74. Even the power tier cracked — Talen (TLN) −8.0% to $368.29 — as the Philadelphia Semiconductor Index dropped 4.29% and the Nasdaq 1.47%. (SK hynix's Seoul line was unchanged in the data feed this session, so it is left unquoted rather than double-counted.) The tell holds: when the AI trade repriced, the beta concentrated in the HBM-and-interconnect bottleneck, not in the hyperscaler buyers.

The reads now come print by print. GE Vernova reports July 22; Intel, Besi and Samsung on July 23; Amkor July 27; Alphabet and Microsoft July 28; Entegris and KLA July 30. The number the memory complex is bracing for is SK hynix's Q2 on July 29 — HBM4 pricing and shipment timing, the single input that decides whether this week's supply-side tax was a repricing or the start of a cycle.