Tudor Investment Corp., the firm founded by billionaire macro investor Paul Tudor Jones, significantly increased its investment in the iShares CORE S&P 500 ETF (IVV). According to a recent SEC disclosure, the firm's stake grew by over 730%, from approximately 195,000 shares to 1.62 million shares.
This quarterly filing reflects the firm's holdings as of June 30, 2026, and was made public on August 14. The reported value of the position surged from $127 million to over $1.21 billion, making it a more substantial part of the fund's overall portfolio. This trade represents a significant bet on the direction of the large-cap U.S. stock market.