MUU is trading -18.24% lower in pre-market on June 23, 2026. This significant decline is primarily driven by investor de-risking ahead of Micron Technology's (MU) Q3 2026 earnings report on June 24. The pullback aligns with a broader tech-led sell-off, weaker U.S. equity futures, and anticipation of Thursday's PCE inflation data, contributing to heightened interest rate concerns.