Rock Springs Capital Management LP
Rock Springs Capital Management LP is a Baltimore, Maryland-based hedge fund focused on investing primarily in healthcare and life sciences sectors. Founded in 2013, the firm manages several hedge funds including the flagship Rock Springs Capital Master Fund LP, and serves institutional and high-net-worth clients. With about 20 employees, Rock Springs Capital is recognized for its deep expertise in healthcare-sector investing.
Investment Strategy
Rock Springs Capital Management LP pursues a fundamental, research-driven investment strategy with a primary focus on healthcare and life sciences. The firm employs a long/short equity approach, leveraging specialized healthcare knowledge and bottom-up research to identify attractive investment opportunities within biopharmaceuticals, medical technology, and healthcare services. Risk management and portfolio diversification are hallmarks of their disciplined methodology.
Latest 13F Filing Activity
Rock Springs Capital Management LP filed their most recent 13F report on Jun 30, 2025 disclosing 91 equity positions with a total 13F market value of $2B. The fund increased holdings in Agios Pharmaceuticals Inc., Caris Life Sciences Inc., Omada Health Inc. among other positions. Rock Springs Capital Management LP reduced exposure to Blueprint Medicines Corp., Unitedhealth Group Inc., Travere Therapeutics Inc. among others.
Top Holdings
Equity Positions (91)
| Ticker | Security | Weight | Market Value | Shares | Avg Cost | Price | Change (QoQ) |
|---|---|---|---|---|---|---|---|
A ARGX | ARGENX SE | 6.04% | $96.9M | 175,750 | $160.41 | $551.22 | -$7.1M |
L LLY | ELI LILLY & CO | 5.66% | $90.8M | 116,500 | $714.25 | $779.53 | -$2.9M |
M MRUS | MERUS N V | 3.49% | $55.9M | 1,063,608 | $32.75 | $52.60 | +$14.7M |
R RYTM | RHYTHM PHARMACEUTICALS INC | 3.39% | $54.4M | 861,153 | $18.96 | $63.19 | +$10.2M |
I INSM | INSMED INC | 3.29% | $52.8M | 525,000 | $66.93 | $100.64 | +$13.5M |
Industry Allocation
Investment Team (2)
| Name | Role | Location | |
|---|---|---|---|
B Bigyan Bista | Analyst | Washington, DC , United States | |
D Dan S. | Analyst | MD , United States |