T-Rex Group, a financial services firm, has filed for a leveraged MicroStrategy exchange-traded fund (ETF) in the US, which is expected to expose investors to about 20 times the typical volatility of the S&P 500. MicroStrategy, a software company turned major Bitcoin holder, currently possesses 214,400 Bitcoin, valued at $13.2 billion. The company's shares have surged 120% this year, largely due to the rise in Bitcoin's price. Other companies have started to adopt MicroStrategy's Bitcoin-focused strategy, using the cryptocurrency as a core treasury asset.