IDEAYA BIOSCIENCES INC (IDYA) Institutional Ownership Changes & 13F Activity
IDEAYA BIOSCIENCES INC (IDYA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Alliancebernstein L.P., Deerfield Management Company, L.P., Baker Bros. Advisors Lp, Price T Rowe Associates Inc, and Ensign Peak Advisors, Inc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +34,679 | +47.6% | 107,585 | $4.01M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Sell | -378,962 | -55.8% | 300,438 | $11.20M | Q2 2026 | Sep 02, 2026 |
| Allianz Asset Management Gmbh | Buy | +20,000 | — | 20,000 | $745.40K | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Sell | -2,719 | -2.8% | 93,936 | $3.50M | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +5,686 | — | 5,686 | $211.92K | Q2 2026 | Aug 19, 2026 |
| Seven Fleet Capital Management Lp | Sell | -48,418 | -56.1% | 37,865 | $1.41M | Q2 2026 | Aug 17, 2026 |
| Alliancebernstein L.P. | Buy | +1,526,735 | +1514.8% | 1,627,521 | $54.23M | Q2 2026 | Aug 14, 2026 |
| Deerfield Management Company, L.P. | Buy | +1,184,495 | +77.4% | 2,714,503 | $101.17M | Q2 2026 | Aug 14, 2026 |
| Baker Bros. Advisors Lp | Buy | +1,063,515 | +26.9% | 5,010,030 | $186.72M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +891,582 | +67.8% | 2,207,451 | $82.27M | Q2 2026 | Aug 14, 2026 |
| Ensign Peak Advisors, Inc | Sell | -632,322 | -70.3% | 267,182 | $9.96M | Q2 2026 | Aug 14, 2026 |
| Sio Capital Management, Llc | Buy | +480,383 | — | 480,383 | $17.90M | Q2 2026 | Aug 14, 2026 |
| Logos Global Management Lp | Sell | -450,000 | -13.0% | 3,000,000 | $111.81M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -424,003 | -25.6% | 1,231,614 | $45.90M | Q2 2026 | Aug 14, 2026 |
| Rtw Investments, Lp | Buy | +370,370 | — | 370,370 | $13.80M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -218,480 | -95.4% | 10,500 | $391.33K | Q2 2026 | Aug 14, 2026 |
| Sofinnova Investments, Inc. | Sell | -206,667 | -18.3% | 925,119 | $34.48M | Q2 2026 | Aug 14, 2026 |
| Burkehill Global Management, Lp | Buy | +200,000 | — | 200,000 | $7.45M | Q2 2026 | Aug 14, 2026 |
| Sphera Funds Management Ltd. | Buy | +196,408 | — | 196,408 | $7.32M | Q2 2026 | Aug 14, 2026 |
| Verition Fund Management Llc | Buy | +184,054 | — | 184,054 | $6.86M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +145,220 | — | 145,220 | $5.41M | Q2 2026 | Aug 14, 2026 |
| Redmile Group, Llc | Buy | +119,085 | +22.9% | 640,202 | $23.86M | Q2 2026 | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | Sell | -108,109 | -3.8% | 2,715,391 | $101.20M | Q2 2026 | Aug 14, 2026 |
| Integral Health Asset Management, Llc | Buy | +100,000 | — | 100,000 | $3.73M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +89,220 | +42.8% | 297,565 | $11.09M | Q2 2026 | Aug 14, 2026 |
| Odyssean, Llc | Buy | +87,308 | +571.6% | 102,582 | $3.82M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +84,052 | +8.9% | 1,026,143 | $38.24M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -77,911 | -65.4% | 41,205 | $1.54M | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Sell | -74,060 | -74.6% | 25,218 | $939.88K | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Buy | +73,646 | +42.9% | 245,492 | $9.15M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about IDYA activity
Which institutional owners are buying IDYA?
Institutional owners buying IDYA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in IDYA activity?
"Buy" means an investor increased their reported position in IDYA compared to the prior reporting period. This reflects growing exposure to IDEAYA BIOSCIENCES INC (IDYA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in IDYA increasing?
Institutional interest in IDYA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related IDYA Institutional Insights
- IDYA Overview
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- IDYA Top Institutional Shareholders
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- Institutional Portfolio Overlap & Shared Holdings
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- IDYA Insider Trading & SEC Form 4 Activity
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