Overview of Jim Simons (Trades, Portfolio)'s Recent Trade Renaissance Technologies, led by Jim Simons (Trades, Portfolio), has recently adjusted its holdings in Heidrick & Struggles International Inc (NASDAQ:HSII), a prominent leadership advisory firm. On December 29, 2023, the firm reduced its position in HSII, signaling a strategic shift in its investment portfolio. This move by one of the world's most successful hedge funds has caught the attention of investors and market analysts alike, as they seek to understand the implications of this transaction.