Rock Springs Capital ERAS Position
Active5-Fund ConvergenceRock Springs Capital initiated a new position in Erasca Inc. (ERAS) in Q4 2025, holding $3.5M worth of shares across 951,710 shares.
ERAS is a convergence signal: 5 specialist biotech funds hold this stock, suggesting high institutional conviction.
There is an upcoming Phase 3 readout for Naporafenib in 745 days (Apr 30, 2028), making the timing of Rock Springs's position particularly relevant.
About Erasca Inc.
Erasca, Inc., a clinical-stage biopharmaceutical company, focuses on discovering, developing, and commercializing therapies for patients with RAS/MAPK pathway-driven cancers. The company's lead candidates include ERAS-007, an oral inhibitor of ERK1/2 for the treatment of non-small cell lung cancer, colorectal cancer, and acute myeloid leukemia; and ERAS-601, an oral SHP2 inhibitor for patients with advanced or metastatic solid tumors. It is also developing ERAS-801, a central nervous system-penetrant EGFR inhibitor for the treatment of patients with recurrent glioblastoma multiforme. The company was incorporated in 2018 and is headquartered in San Diego, California.
Full company profile →Short Interest
9.5%
6.4 days to cover
Frequently Asked Questions
Does Rock Springs Capital own ERAS?
Yes. As of Q4 2025, Rock Springs Capital holds 951,710 shares of Erasca Inc. (ERAS) valued at $3.5M. This data comes from their SEC 13F filing.
How many hedge funds own ERAS?
5 specialist biotech hedge funds currently hold ERAS, including Cormorant Asset Management, Tang Capital Management, EcoR1 Capital and 1 more. When 3 or more specialist funds hold the same stock, BiotechEdge flags it as a convergence signal.
When did Rock Springs Capital first buy ERAS?
Rock Springs Capital's position in ERAS was first reported in Q4 2025. 13F filings are reported with a 45-day delay, so the actual purchase may have occurred earlier in the quarter.
Is Rock Springs Capital's ERAS position increasing or decreasing?
Rock Springs Capital initiated a new position in ERAS in the most recent quarter. This is their first reported holding.
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