Jim Simons Portfolio

Jim Simons founded Renaissance Technologies. It's one of the most successful quant funds in the world. A quant fund determines investments based on mathematical models and algorithmic strategies. Their most successful fund is "Medallion Fund". From 2001 to 2013, the lowest return was +21%. In 2008 when the SS&P 500 lost over 38%, Medallion Fund almost doubled. It has earned over $100 billion in profits for its investors. The fund is only available to employees and family members of the fund. Due to this long-term success, Jim Simons was described as "the most successful hedge fund manager of all time". He is also known as a prize-winning mathematician, billionaire, and now as a philanthropist through the Simons Foundation.
Jim Simons’ investment portfolio reflects a concentrated approach across technology and healthcare stocks, emphasizing high-growth potential, strong balance-sheet discipline, and differentiated business models. The top five stock investments in this portfolio include leading innovators where scale, cash flow, and technical leverage can drive long-term returns:
1) Carvana Co. — Ordinary Shares (Class A): An investment focused on auto retail disruption, capital efficiency, and improving unit economics within the used-vehicle market.
2) Micron Technology Inc.: A semiconductor investment tied to memory-cycle recovery, demand for data-driven computing, and exposure to secular trends in AI and cloud infrastructure.
3) United Therapeutics Corp: A healthcare investment centered on specialty biopharmaceutical growth, with an emphasis on durable revenue streams and pipeline development.
4) Palantir Technologies Inc — Ordinary Shares (Class A): A software and data-platform investment benefiting from enterprise adoption of decision intelligence, government contracts, and scalable analytics platforms.
5) Apple Inc.: A core large-cap investment combining ecosystem strength, brand loyalty, and consistent cash generation—used as a stabilizing position alongside higher-growth stocks.
Overall, Jim Simons’ portfolio highlights selective investment in quality compounders across tech and healthcare, balancing innovation opportunities with resilient businesses among notable stocks.