SOXX is trading 4.7% down today as the semiconductor sector extends a multi-day selloff driven by Taiwan Semiconductor (TSMC) boosting its capital-expenditure plans and stoking fears about rising costs and the durability of the AI infrastructure boom.
- The Philadelphia Semiconductor Index is down double-digits for July as investors reassess hyperscaler AI capex and higher-for-longer interest rate risks.
- Geopolitical stress around the U.S.–Iran conflict and hawkish Fed commentary are reinforcing risk-off sentiment toward high-beta tech names.
- TSMC’s record earnings and aggressive U.S. expansion plan highlighted the high cost of sustaining the AI boom, leading to a sector-specific repricing.