Jane Street holds over $1B in U.S. spot Bitcoin ETFs, led by $828M in BlackRock's IBIT as of June 30, 2026.

Jane Street disclosed owning more than $1 billion in U.S. spot Bitcoin ETF shares as of June 30, 2026, including roughly $828 million in BlackRock's iShares Bitcoin Trust (IBIT). This represents a significant rebound from earlier in the year when its IBIT holdings had dropped sharply. The filing reflects ETF shares rather than direct Bitcoin and does not specify purchase timing or motives, though Jane Street as a major market maker likely uses the shares for trading or hedging, with the next update due in November 2026.