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Semiconductor index on track for worst week since liberation day as AI trade reverses

7/19/2026

The US semiconductor stock index is on pace for its worst weekly loss since last year's liberation day rout, a comparison that places this week among a rare category of drawdowns.

Global tech stocks are falling alongside it as the AI trade goes into reverse. The liberation day benchmark Last year's liberation day set the prior reference point for weekly losses on the semiconductor index.

This week is closing in on that level. The index does not enter liberation day loss territory often, and doing so now is the central fact of this selloff. This is not routine tech-sector softness.

Semiconductors absorb the AI reversal The AI trade reversing flows directly through the semiconductor index.