Micron Technology fell 11% on Wednesday, 1 July 2026, erasing approximately $200 billion in market capitalisation at the start of Q3. The move follows a surge of over 240% in Q2, making the single-session reversal one of the sharpest recorded for the stock following a quarterly rally of that magnitude. The decline was reported by CNBC TOP and Finnhub.
Micron's shares (MU) dropped 11% in Wednesday's session, the specific price data representing the most concrete market movement reported in the cluster. The SMH and SOXX ETFs — which track broad semiconductor indices and hold MU as a constituent — are directly exposed to Micron's weighting within the semiconductor sector.
The scale of the reversal is contextualised by Micron's contribution to broader index returns in H1 2026. MarketWatch TOP reports that Micron accounted for approximately 26% of Nasdaq-100 returns and 17% of S&P 500 gains during the first half of the year, reflecting the degree to which index-level performance had become concentrated in a small number of large-cap semiconductor names.
Sources: Cnbc TOP, Finnhub, Marketwatch TOP