Briefing
DeepSeek's open-model release triggered a single-session selloff in Nvidia and the broader semiconductor complex as investors questioned AI infrastructure capex justification. The current TSMC-capex-driven selloff follows the same mechanism: a supply-side data point is read as a demand-sustainability question rather than a confirmation of growth.
Netflix removed paid sharing disclosures and shifted to advertising-tier metrics in 2022-2023, each disclosure reduction preceded a period of analyst estimate dispersion and multiple compression until a new disclosure regime stabilized expectations. The 'What We Watched' reduction follows this same playbook.
Semiconductor stocks peaked in late 2021 when TSMC and others raised capex aggressively into a demand cycle that subsequently corrected sharply in 2022. Investors are pattern-matching TSMC's 2026 capex raise to that episode, creating a reflexive selloff even as AI demand signals remain positive.

SK Hynix's 11-13% single-session rebound earlier this week, followed by this renewed SMH decline of nearly 4% on Thursday, confirms a high-volatility regime where AI semiconductor names oscillate sharply without resolving the fundamental valuation question. Risk managers flagged by Pella Funds' Cvetanovski as seeing 'all the classic signs' of a rude shock are now facing two consecutive down sessions after that bounce.

TSMC's $265bn Arizona commitment announced Wednesday provided the capex expansion context that made Thursday's Q2 report's raised full-year spending outlook a negative catalyst rather than a neutral one; investors already aware of the Arizona scale read the incremental capex raise as compounding, not isolated.
ASML's second 2026 guidance raise confirms equipment demand is structurally strong, creating a direct contradiction with the chip designer selloff: the equipment cycle is accelerating while the end-market multiples are contracting, a divergence that will eventually resolve either through designer earnings upgrades or equipment order pullbacks.
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VanEck Semiconductor ETF falls 6.9% for the week after TSMC's mixed Q2 and raised capex outlook rattles sector

9 hours ago