Redmile Group IDYA Position
Active12-Fund ConvergenceRedmile Group held their position in IDEAYA Biosciences Inc. (IDYA) in Q4 2025, holding $25.7M worth of shares across 742,017 shares.
The position was first reported in Q4 2023 and has been tracked across 9 quarterly 13F filings.
IDYA is a convergence signal: 12 specialist biotech funds hold this stock, suggesting high institutional conviction.
There is an upcoming Phase 2 readout for GSK4418959 in 67 days (Jun 22, 2026), making the timing of Redmile's position particularly relevant.
Short interest stands at 13.1% of float with 11.3 days to cover, indicating significant bearish positioning against Redmile's long thesis.
About IDEAYA Biosciences Inc.
IDEAYA Biosciences, Inc., a synthetic lethality-focused precision medicine oncology company, focuses on the discovery and development of targeted therapeutics for patient populations selected using molecular diagnostics. The company's lead product candidates include IDE397, a methionine adenosyltransferase 2a inhibitor that is in Phase I clinical trial for patients with solid tumors having methylthioadenosine phosphorylase deletions; and IDE196, a protein kinase C inhibitor that is in Phase I/II clinical trial for genetically defined cancers having GNAQ or GNA11 gene mutations. Its preclinical pipeline includes various synthetic lethality programs targeting PARG inhibitor in tumors for patients having tumors with a defined biomarker based on genetic mutations and/or molecular signatures; Pol Theta inhibitors in tumors with BRCA or other homologous recombination deficiency mutations; and WRN inhibitors in tumors with high microsatellite instability. The company has a research collaboration agreement with Cancer Research UK and the University of Manchester to develop small molecule inhibitors of Poly (ADP-ribose) glycohydrolase; and a clinical trial collaboration and supply agreement with Pfizer Inc. for Phase I/II study in metastatic uveal melanoma, skin melanoma, and other solid tumors, as well as a strategic partnership with GlaxoSmithKline plc. IDEAYA Biosciences, Inc. was incorporated in 2015 and is headquartered in South San Francisco, California.
Full company profile →Short Interest
13.1%
11.3 days to cover
Redmile Group IDYA Position History
| Quarter | Action | Shares | Change | Value |
|---|---|---|---|---|
| Q4 2025 | Held | 742,017 | — | $25.7M |
| Q3 2025 | Increased | 742,017 | +309,523 | $20.2M |
| Q2 2025 | Decreased | 432,494 | -102,106 | $9.1M |
| Q1 2025 | Decreased | 534,600 | -84,700 | $8.8M |
| Q4 2024 | Decreased | 619,300 | -61,850 | $15.9M |
| Q3 2024 | Decreased | 681,150 | -78,366 | $21.6M |
| Q2 2024 | Decreased | 759,516 | -163,162 | $26.7M |
| Q1 2024 | Decreased | 922,678 | -13,185 | $40.5M |
| Q4 2023 | New | 935,863 | +935,863 | $33.3M |
Frequently Asked Questions
Does Redmile Group own IDYA?
Yes. As of Q4 2025, Redmile Group holds 742,017 shares of IDEAYA Biosciences Inc. (IDYA) valued at $25.7M. This data comes from their SEC 13F filing.
How many hedge funds own IDYA?
12 specialist biotech hedge funds currently hold IDYA, including BVF Partners, Baker Bros. Advisors, Deerfield Management and 8 more. When 3 or more specialist funds hold the same stock, BiotechEdge flags it as a convergence signal.
When did Redmile Group first buy IDYA?
Redmile Group's position in IDYA was first reported in Q4 2023. 13F filings are reported with a 45-day delay, so the actual purchase may have occurred earlier in the quarter.
Is Redmile Group's IDYA position increasing or decreasing?
Redmile Group held their IDYA position unchanged in the most recent quarter.
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