Jane Street boosts IBIT and MSTR positions but may not be outright bullish on Bitcoin

Jane Street significantly raised its IBIT and MSTR shareholdings in Q4 and February 2026, including a 53.78% jump to 20.3M IBIT shares valued at $1B. These stakes may primarily serve as market maker inventory tied to derivative strategies, rather than reflecting a simple long-term bullish bet on BTC.