Micron Stock (MU) After Hours Today: Shares Hold a 10% Jump After Blowout Guidance — What to Watch Before Friday’s Open (Dec. 19, 2025)
Micron shares closed up 10.24% at $248.55 Thursday after reporting record fiscal Q1 results and issuing a Q2 outlook that doubled Wall Street estimates. Revenue for Q1 hit $13.64 billion with net income of $5.24 billion. Trading volume surged as investors responded to strong guidance driven by AI-related memory demand and ongoing supply tightness.