Tudor Investment Raises BlackRock Bitcoin ETF Stake to $22.9M

Tudor Investment Corp, the macro hedge fund founded by billionaire Paul Tudor Jones, has increased its stake in BlackRock's iShares Bitcoin Trust by 18.9%, according to a regulatory filing released on August 15. The purchase, detailed in a 13F filing with the Securities and Exchange Commission for the period ending June 30, brings the fund's holdings in the spot Bitcoin ETF to 688,529 shares, valued at approximately $22.9 million at the time of filing.

The move marks a notable shift for Jones, who had been reducing his position in the fund throughout 2025. The current holding is up from 579,083 shares reported at the end of the first quarter of 2026. While the $22.9 million position represents a small fraction of Tudor Investment's approximately $106 billion in total managed assets, the increase is significant as it ends a year-long selling trend and aligns with a broader pattern of institutional adoption of spot Bitcoin products.

The filing also revealed a substantial reduction in Tudor's derivative positions. Call options tied to IBIT were cut by 85.2%, falling to cover 148,000 underlying shares, while put positions saw a slight decline. These options are often used for...