Palo Alto Investors LP is a California-based, physician-led investment firm renowned for its deep, fundamental research. Specializing in private equity and hedge fund investments, the firm targets small to mid-cap U.S. companies. Palo Alto Investors was founded by William Leland Edwards in 1989. Palo Alto Investors is currently majority-owned by Joon Yun and Patrick Lee. They both own more than 25% and less than 50% of the fund.
Anthony Joonkyoo "Joon" Yun began his career as a healthcare analyst at Palo Alto Investors in 1998, where he has been responsible for healthcare investments ever since. In 2008, he was elected president of the firm. Yun attended St. Albans School in Washington, D.C., before earning a Bachelor of Arts degree in biology from Harvard College in 1990. He received his Doctor of Medicine degree from Duke University School of Medicine in 1994 and completed a fellowship and residency in radiology at Stanford Hospital in 2000. Following his residency, Yun served on the clinical faculty at Stanford Hospital from 2000 to 2006.
Patrick Lee serves as a Principal at Palo Alto Investors, leveraging the experiences he gained from previous roles at Stanford University Medical Center. Before his tenure at Palo Alto Investors, Patrick Lee pursued his medical education at Duke University School of Medicine, where he obtained his MD degree from 1997 to 2002. His background at Stanford University Medical Center has equipped him with valuable insights and expertise in the healthcare sector, complementing his role in investment analysis and management at Palo Alto Investors.
Palo Alto Investors is a hedge fund managing discretionary assets worth $1,057,000,000, as reported in their Form ADV on March 2024. Serving 12 clients, the firm's latest 13F filing for Q1 2024 disclosed $886,726,077 in managed 13F securities, with the top 10 holdings comprising 73.36% of the portfolio. The largest holding is Insmed Inc., with 4,423,369 shares.