Direxion Daily MU Bull 2X ETF ( $MUU) Climbs +26% Over 30 Days on Micron Rebound (See the latest news for any ticker on Tickeron.) MUU, a 2x daily leveraged single-stock ETF tracking Micron Technology, has gained roughly 26% over the trailing 30 days. The advance reflects a sharp rebound in MU shares from a late-summer consolidation, amplified by the fund's daily 2x leverage target. Over the trailing three months, MUU is up only about 3%, underscoring the product's elevated volatility and the impact of daily compounding. $TQQQ $SSO $QLD