The ETF Opportunities Trust T-Rex 2X Long MSTR Daily Target ETF (MSTU) closed at $9.23 on January 13, experiencing a slight decline of 0.32% by the end of the trading day. MicroStrategy, which the ETF tracks, saw its shares fall by 3.9% after the company announced the purchase of approximately 2,530 Bitcoin for $243 million in cash. This acquisition reflects MicroStrategy's ongoing strategy to increase its Bitcoin holdings, which can lead to volatility in its stock price due to Bitcoin's inherent price fluctuations. The market's reaction to this purchase likely contributed to the ETF's performance, as investors weigh the potential risks and rewards of MicroStrategy's aggressive Bitcoin accumulation strategy.