Direxion Daily MU Bull 2X Shares is trading 9% higher in pre-market action as it reacts to a sharp after-hours and overnight rally in Micron Technology and other semiconductor stocks.

  • The outsized move in the leveraged ETF is primarily driven by significant gains in Micron (MU) and its industry peers during the June 18, 2026, session.
  • While broader U.S. equity futures are trending higher, the specific strength in the chip sector remains the dominant catalyst for the jump.
  • As a 2x leveraged instrument, the MUU ETF is designed to provide double the daily performance exposure to Micron's stock price movements.