Chip Stocks — Down 13% in a Week, Under the Floor That Held Twice; the Average Stock Barely Moved

The companies that build AI broke the floor they had held since the summer.

The chip fund fell 13.1 percent, 12.2 of it on Thursday, and closed 37.5 percent under its June high; the AI build-out index closed under the zone that had held twice and under the 61.8 percent line of its 2026 rally. The average stock barely moved — the equal-weight S&P fell 1.0 percent and is up 12.8 percent on the year, health care is 14.9 points ahe…