Jim Simons' Portfolio Analysis: Q4 2025 Investment Activity Revealed
Renaissance Technologies' Jim Simons saw his portfolio value increase to $62.9 billion as of December 31, 2025, with notable shifts across Technology, Healthcare, and other sectors.
As of December 31, 2025, Jim Simons' portfolio at Renaissance Technologies LLC stands at a substantial $62.91 billion. This quarter's filing reveals significant activity, with notable increases in holdings like Tesla and Micron Technology, alongside reductions in positions such as Palantir Technologies and United Therapeutics.
The Technology sector remains a key focus, with Tesla (TSLA) and Micron Technology (MU) showing dramatic increases. Simons' stake in Tesla grew by an impressive 220.88% in terms of shares, while Micron saw a 151.03% increase. Netflix (NFLX) also saw substantial buying, with a 2,544.63% jump in shares held.
In contrast, the investor scaled back positions in several other sectors. Palantir Technologies (PLTR) saw a reduction of 12.15% in its stake, United Therapeutics (UTHR) decreased by 12.15%, and KGC (Kinross Gold) and Verisign (VRSN) also experienced significant declines. Exelixis (EXEL) saw a 10.00% reduction.
Simons also initiated a position in CARVANA (CVNA) and slightly increased Costco (COST) holdings. The portfolio maintains diversification across sectors including Technology, Healthcare, Consumer Cyclical, and Consumer Defensive.
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