MUU is trading 36.8% up today as Micron’s blowout earnings and guidance spark a sharp rebound in AI and semiconductor sentiment.

  • As a 2x leveraged ETF, MUU is magnifying the strong follow-through buying in Micron shares following its significant earnings beat.
  • The surge extends a post-report rally that began on June 24, 2026, as positive momentum returns to the broader semiconductor sector.