Who owns IDYA?
Institutional ownership of IDEAYA Biosciences Inc. from Form 13F, Q2 2026
284 institutional managers reported holding IDEAYA Biosciences Inc. (IDYA) in Form 13F filings for Q2 2026, with 102,268,210 shares worth $3.8B. The largest reported holder was FMR LLC. Managers that filed both quarters added a net 6,226,109 shares (+7.1%). 63 opened new positions and 33 sold out.
- Funds holding
- 284
- Value held
- $3.8B
- New / sold out
- 63 / 33
- Net shares, same filers
- +7.1%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of IDYA
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| FMR LLC | $526M | 13.8% | 14,109,431 | Added |
| BlackRock, Inc. | $331M | 8.7% | 8,893,260 | Added |
| Jupiter Topco LLC | $320M | 8.4% | 8,579,881 | First report |
| Capital Research Global Investors | $199M | 5.2% | 5,344,701 | Added |
| Baker Bros. Advisors LP | $187M | 4.9% | 5,010,030 | Added |
| State Street Corp | $170M | 4.4% | 4,548,911 | Added |
| Vanguard Capital Management LLC | $154M | 4.0% | 4,132,646 | Added |
| Logos Global Management LP | $112M | 2.9% | 3,000,000 | Trimmed |
| Adage Capital Partners GP, L.l.c. | $101M | 2.7% | 2,715,391 | Trimmed |
| Deerfield Management Company, L.p. | $101M | 2.7% | 2,714,503 | Added |
| Geode Capital Management, LLC | $90.4M | 2.4% | 2,425,602 | Trimmed |
| Price T Rowe Associates Inc | $82.3M | 2.2% | 2,207,451 | Added |
| Morgan Stanley | $72.0M | 1.9% | 1,931,491 | Added |
| Dimensional Fund Advisors LP | $61.9M | 1.6% | 1,661,281 | Added |
| Alliancebernstein L.p. | $54.2M | 1.6% | 1,627,521 | Added |
| Fiera Capital Corp | $53.9M | 1.4% | 1,445,885 | Trimmed |
| Federated Hermes, Inc. | $53.4M | 1.4% | 1,431,630 | Trimmed |
| GSK plc | $49.7M | 1.3% | 1,333,333 | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $47.3M | 1.2% | 1,269,889 | Added |
| Goldman Sachs Group Inc | $45.9M | 1.2% | 1,231,614 | Trimmed |
| Candriam S.C.A. | $40.7M | 1.1% | 1,092,301 | Trimmed |
| Bank of America Corp | $38.2M | 1.0% | 1,026,143 | Added |
| Sofinnova Investments, Inc. | $34.5M | 0.9% | 925,119 | Trimmed |
| Arrowstreet Capital, Limited Partnership | $33.2M | 0.9% | 891,608 | New |
| Fisher Asset Management, LLC | $31.7M | 0.8% | 851,306 | Trimmed |
Share of 13F holdings is each fund's shares as a share of the 102,268,210 IDYA shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Alliancebernstein L.p. Added+$50.9M
- Deerfield Management Company, L.p. Added+$44.1M
- Baker Bros. Advisors LP Added+$39.6M
- FMR LLC Added+$34.9M
- Arrowstreet Capital, Limited Partnership New+$33.2M
- Price T Rowe Associates Inc Added+$33.2M
- State Street Corp Added+$28.6M
- Sio Capital Management, LLC New+$17.9M
- BlackRock, Inc. Added+$16.8M
- Vanguard Capital Management LLC Added+$14.9M
Biggest sellers in Q2 2026
- Federated Hermes, Inc. Trimmed-$58.0M
- Fiera Capital Corp Trimmed-$40.3M
- First Turn Management, LLC Sold out-$29.1M
- Ensign Peak Advisors, Inc Trimmed-$23.6M
- Logos Global Management LP Trimmed-$16.8M
- Goldman Sachs Group Inc Trimmed-$15.8M
- Citadel Advisors LLC Trimmed-$14.1M
- Point72 Asset Management, L.P. Sold out-$10.9M
- Deutsche Bank Ag\ Trimmed-$10.6M
- Nicholas Investment Partners, LP Sold out-$8.3M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $542M and sold $308M; 91 added and 87 trimmed.
Schedule 13D and 13G filings on IDYA
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2025-08-13Capital Research Global Investors SCHEDULE 13G filed by IDEAYA Biosciences Inc.Schedule 13G
- 2025-06-09Point72 Asset Management, L.P. SCHEDULE 13G filed by IDEAYA Biosciences Inc.Schedule 13G
Questions about IDYA ownership
- Who owns IDYA stock?
- 284 institutional investment managers reported IDYA positions in their Form 13F filings for Q2 2026, holding 102,268,210 shares worth $3.8B in total. FMR LLC reported the largest position.
- Are funds buying or selling IDYA?
- In Q2 2026, 63 managers opened new IDYA positions, 91 added, 87 trimmed and 33 sold out. Managers that filed in both quarters added a net 6,226,109 shares.
- How current is this IDYA institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to IDYA by CUSIP. Options are left out. IDYA news and filings · IDYA insider trades · Top funds