Interactive Brokers (IBKR) is raising margin requirements on MicroStrategy Inc. (MSTR), increasing them to a minimum of 50% by January 13, 2025. This decision aims to reduce the firm's risk exposure, indicating potential volatility in the market. The move comes as a response to concerns surrounding MSTR, which has been a target for short-selling by hedge funds. Analysts suggest that IBKR's approach may lead to forced liquidations for investors who are heavily leveraged in MSTR positions, as the brokerage does not perform margin calls but instead liquidates positions to manage risk. The situation is drawing attention from market participants, with expectations of a significant market event ahead.