Jim Simons' Top Holdings in 2025: Dominance in Tech and Healthcare Stocks

Renaissance Technologies LLC, the highly successful quant hedge fund led by investor Jim Simons, maintained a diverse portfolio as of December 2025, with significant allocations to top-performing companies across various sectors. The fund's holdings reflect a strategic focus on established leaders and emerging growth stocks in key industries.

Jim Simons' fund held a substantial position in PALANTIR TECHNOLOGIES INC (PLTR), a leader in enterprise data platforms. The fund owned 8,796,727 shares valued at approximately $1.56 billion, representing about 2.43% of the total portfolio. Compared to the previous period, the fund increased its stake by 230,852 shares, a modest 2.7% increase.

UNITED THERAPEUTICS CORP DEL (UTHR) was another significant holding, with 1,909,259 shares valued at $930 million, accounting for 1.44% of the portfolio. The fund reduced its position in this healthcare company, decreasing holdings by 264,133 shares, a 12.15% reduction from the prior period.

MICRON TECHNOLOGY INC (MU) represented a key position in the Technology sector, with 3,011,143 shares valued at $859 million (1.33% allocation). The fund significantly increased its stake in this semiconductor manufacturer, adding 1,811,607 shares, a substantial 151% increase in holdings.

KINROSS GOLD CORP (KGC) was held in the Basic Materials sector, with 24,975,313 shares valued at $703 million (1.09% allocation). The fund reduced its position in gold mining, cutting holdings by 1,105,017 shares, a 4.24% decrease.

VERISIGN INC (VRSN) was another Technology holding, with 2,779,351 shares valued at $675 million (1.05% allocation). The fund decreased its stake in this domain name registrar, reducing holdings by 390,920 shares, an 12.33% reduction.

NETFLIX INC (NFLX) represented a major position in the Communication Services sector, with 7,178,287 shares valued at $673 million (1.04% allocation). The fund dramatically increased its Netflix stake, adding 6,906,858 shares, an eye-watering 2,544.63% increase from the previous period.

TESLA INC (TSLA) was held in the Consumer Cyclical sector, with 1,362,122 shares valued at $612 million (0.95% allocation). The fund increased its Tesla position by 937,632 shares, a 220.88% increase during the period.

EXELIXIS INC (EXEL) was another Healthcare holding, with 13,914,043 shares valued at $610 million (0.95% allocation). The fund reduced its position in this biopharmaceutical company by 1,545,223 shares, a 10.0% decrease.

COSTCO WHSL CORP NEW (COST) represented a significant position in the Consumer Defensive sector, with 693,002 shares valued at $598 million (0.93% allocation). The fund increased its stake in the wholesale club operator by 679,978 shares, a remarkable 5220.96% increase.

CARVANA CO (CVNA) completed the top holdings with a Consumer Cyclical allocation of $594 million (0.92% of the portfolio). The fund added 394,286 shares during the period, a 38.92% increase in holdings.