IDEAYA Biosciences
IDYA · NASDAQ
$35.36+$1.55 (+4.58%)TodayMarket closed ·
Prev close $33.81
Who owns IDYA
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 60.3% of IDYA’s shares.
- Fidelity Management & Research Company LLC14.8%
- Janus Henderson Investors9.0%
- BlackRock Institutional Trust Company, N.A.7.5%
- Capital Research Global Investors5.6%
- Next 6 largest institutions23.3%
- All other shareholders39.7%
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Management & Research Company LLC | 14.11M | 14.84% |
| Janus Henderson Investors | 8.58M | 9.02% |
| BlackRock Institutional Trust Company, N.A. | 7.14M | 7.51% |
| Capital Research Global Investors | 5.34M | 5.62% |
| Baker Bros. Advisors LP | 5.01M | 5.27% |
| State Street Investment Management (US) | 4.55M | 4.78% |
| Vanguard Capital Management, LLC | 4.13M | 4.35% |
| Logos Global Management LP | 3.00M | 3.16% |
| Adage Capital Management, L.P. | 2.72M | 2.86% |
| Deerfield Management Company, L.P. | 2.71M | 2.85% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| American Funds SMALLCAP World Fund | 5.20M | 5.47% |
| Fidelity Growth Company Fund | 4.71M | 4.96% |
| Vanguard Total Stock Market Index Fund | 2.98M | 3.13% |
| State Street SPDR S&P Biotech ETF | 2.44M | 2.56% |
| iShares Russell 2000 ETF | 2.14M | 2.25% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $1.37M (3 trades) of IDYA on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Hata Yujiro S | Option exercise | 26.34K | — |
| Hata Yujiro S | Sale | 800 | $30.61K |
| Hata Yujiro S | Sale | 25.54K | $954.79K |
| Hata Yujiro S | Option exercise | 26.34K | $113.52K |
| Ruiz Briseno Andres | Option exercise | 9.55K | — |
| Ruiz Briseno Andres | Sale | 9.55K | $382.13K |
| Ruiz Briseno Andres | Option exercise | 9.55K | $122.81K |
| MACKEY CATHERINE J | Award | 20.00K | — |
| Stein Jeffrey | Award | 20.00K | — |
| ROSEN TERRY J | Award | 20.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 9.18M
- Days to cover
- 8.43
- % of shares outstanding
- 9.66%
- Average daily volume
- 1.09M
- Change since last report
- −7.5%
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