Stock Ownership/IDYA

IDEAYA Biosciences, Inc. (IDYA): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in IDYA · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
21
13F filers
Aggregate Value
$444.7M
Across holders
Last Price
$40.04
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity13 increased7 reduced2 exited
Full exits: Point72 Asset Management, L.P., Hudson Bay Capital Management LP
Institutional Holders of IDYA
↗
21 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
BAKER BROS. ADVISORS LP
CIK 0001263508
Hedge Fund5.01M$186.7M42.0%0.9%Added+$39.6MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund2.72M$101.2M22.8%0.1%Reduced$-4.0MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund892K$33.2M7.5%0.0%Added—Q2 2026
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager851K$31.7M7.1%0.0%Reduced$-1.2MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund592K$22.1M5.0%0.0%Added+$315KQ2 2026
Walleye Capital LLC
CIK 0001758720
Hedge Fund386K$14.4M3.2%0.1%Added—Q2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund300K$11.2M2.5%0.0%Reduced$-14.0MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund298K$11.1M2.5%0.0%Added+$3.3MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund245K$9.1M2.1%0.0%Added$-3.7MQ2 2026
Woodline Partners LP
CIK 0001784547
Hedge Fund202K$7.5M1.7%0.0%Unchanged+$0Q2 2026
BAKER BROS. ADVISORS LPAdded
Hedge Fund
$186.7M· 42.0% of total· 0.9% port· 5.01M sh· +$39.6M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$101.2M· 22.8% of total· 0.1% port· 2.72M sh· $-4.0M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$33.2M· 7.5% of total· 0.0% port· 892K sh· — QoQ· Q2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$31.7M· 7.1% of total· 0.0% port· 851K sh· $-1.2M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$22.1M· 5.0% of total· 0.0% port· 592K sh· +$315K QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$14.4M· 3.2% of total· 0.1% port· 386K sh· — QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$11.2M· 2.5% of total· 0.0% port· 300K sh· $-14.0M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$11.1M· 2.5% of total· 0.0% port· 298K sh· +$3.3M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$9.1M· 2.1% of total· 0.0% port· 245K sh· $-3.7M QoQ· Q2 2026
Woodline Partners LPUnchanged
Hedge Fund
$7.5M· 1.7% of total· 0.0% port· 202K sh· +$0 QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$6.9M· 1.5% of total· 0.0% port· 184K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$2.5M· 0.6% of total· 0.0% port· 68K sh· +$2.4M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$1.7M· 0.4% of total· 0.0% port· 45K sh· +$96K QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$1.5M· 0.3% of total· 0.0% port· 41K sh· $-2.9M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$940K· 0.2% of total· 0.0% port· 25K sh· $-2.8M QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$932K· 0.2% of total· 0.0% port· 25K sh· — QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$774K· 0.2% of total· 0.0% port· 21K sh· — QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCAdded
Hedge Fund
$524K· 0.1% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$391K· 0.1% of total· 0.0% port· 11K sh· $-4.3M QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$211K· 0.0% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$16K· 0.0% of total· 0.0% port· 431 sh· $-22K QoQ· Q2 2026
1–10 of 21
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