Micron Technology lost roughly 13% of its value on June 23, closing around $1,055 per share. The drop came exactly one day before the company’s fiscal Q3 2026 earnings report, which Wall Street has been treating like a referendum on the entire AI hardware boom.
The damage wasn’t limited to one ticker. The Nasdaq fell about 2% on the day, and the Philadelphia Semiconductor Index dropped approximately 7.87%, dragging names like Lam Research and Applied Materials down with it.
What triggered the selloff
The most immediate catalyst was Broadcom. The chip giant’s recent guidance raised questions about whether AI spending targets were realistic, and investors apparently took that as permission to start locking in profits across the sector.
Micron’s stock had gained nearly 300% earlier in 2026, powered almost entirely by explosive demand for high-bandwidth memory chips, the specialized components that AI servers need to function. HBM capacity at Micron has been sold out, but investors started asking what happens after every available chip is spoken for — if demand plateaus, or even just grows more slowly, the valuation math stops working at these prices.
