Stock Market Today, June 24: Micron Surges After Hours as Nasdaq Stems Losses

Micron Technology (MU) jumped more than 13% in after-hours trading on June 24, 2026, after delivering strong earnings and guidance that defied broader semiconductor weakness. The move came as the Nasdaq Composite fell 0.43% during regular hours, highlighting divergence within the chip sector.

The memory chip maker's after-hours surge stood in sharp contrast to theday's market action, where semiconductor volatility weighed on tech indexes while the Dow Jones Industrial Average gained 0.35%. Micron's guidance appears to have reassured investors concerned about memory chip demand.

Elsewhere in the market, Wendy's spiked 26%, while Hertz plunged 40% following a stock offering announcement. Cerebras Systems, the AI chip maker, crashed in its first earnings report since going public. On the bullish side, JPMorgan lifted its year-end S&P 500 price target to 7,800, signaling continued confidence in the broader market rally despite tech sector turbulence.