The Direxion Daily MU Bull 2X Shares (MUU), a leveraged ETF tracking Micron Technology, recorded a 24-hour plunge of 5.17% in post-market trading on Tuesday. The decline extended losses from the intraday session, with the fund's 2x leverage amplifying the downward move in its underlying asset.

The sell-off was primarily triggered by a paradoxical market reaction to blockbuster earnings from Samsung Electronics. Despite reporting a staggering 1,810% year-over-year surge in second-quarter operating profit, driven by explosive AI memory chip demand, investors interpreted the results as a peak signal, raising concerns about intensifying industry competition and a potential future supply-demand imbalance. This "sell-the-news" dynamic sparked a broad decline in global memory chip stocks, dragging down Micron Technology.

Adding significant downward pressure were bearish signals from prominent investor Michael Burry, who established a short position in Micron, warning that the stock's cyclical peak may have surpassed historical bubble levels. Furthermore, unresolved fears over AI computing overcapacity—fueled by reports of Meta Platforms considering selling idle AI compute resources—continued to weigh heavily on sector sentiment. The prior session's rally was broadly characterized by the market as merely a technical rebound from oversold conditions, with the underlying downtrend remaining firmly intact.