IDYA · IDEAYA Biosciences, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 287 13F filersWho Holds IDYA
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 285 filers, like-for-like change +7.9%; actively managed books +8.7%; index-like books +6.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 36.2% | 144 | +19.9% |
| Exempt adviser | 0.8% | 2 | +19.2% |
| Adviser | 8.3% | 10 | -9.9% |
| Bank | 8.0% | 17 | +12.1% |
| Insurer | 0.0% | 1 | -0.7% |
| Broker-dealer | 0.0% | 3 | +56.4% |
| Registered fund | 0.3% | 1 | +10.0% |
| Benefit plan | 0.2% | 6 | +10.4% |
| Non-US | 3.2% | 9 | -21.8% |
| Holding company | 26.2% | 8 | +3.6% |
| Unknown | 16.8% | 84 | +7.7% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 27.1% | 34 | +6.0% |
| Systematic-like | 2.3% | 25 | -18.7% |
| Concentrated | 7.9% | 39 | +25.2% |
| Diversified active | 62.7% | 187 | +8.2% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 60.1% | 146 | +7.6% |
| Medium turnover | 17.4% | 71 | +5.9% |
| High turnover | 6.8% | 42 | +4.4% |
| Unknown | 15.7% | 26 | +13.4% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 17.1% | 40 | +19.0% |
| Medium horizon | 14.5% | 48 | +2.5% |
| Long horizon | 62.3% | 177 | +5.5% |
| Unknown | 6.2% | 20 | +19.7% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 3.2% | 60 | 0.0% |
| $1B to $10B | 10.8% | 77 | +21.6% |
| $10B to $100B | 18.1% | 79 | -7.3% |
| $100B or more | 67.9% | 69 | +11.2% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.9% | 59 | +11.5% |
| Pooled investment vehicles | 19.3% | 38 | +21.0% |
| Registered funds and BDCs | 13.0% | 18 | +18.0% |
| Pension and profit sharing plans | 0.0% | 1 | -16.6% |
| Insurance companies | 0.2% | 4 | +113.1% |
| Governments and sovereign funds | 0.2% | 3 | -83.0% |
| Corporations | 0.0% | 1 | 0.0% |
| Other investment advisers | 0.0% | 4 | +10.4% |
| Other | 0.1% | 2 | +638.3% |
| Diversified | 2.3% | 12 | +110.6% |
| Unknown | 63.9% | 143 | +2.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 16.6% | 45 | +22.0% |
| Private equity funds | 0.3% | 7 | -2.5% |
| Venture capital funds | 3.0% | 3 | -11.2% |
| Real estate funds | 0.0% | 3 | +25.9% |
| Securitized asset funds | 0.1% | 1 | -18.2% |
| Other private funds | 5.4% | 10 | +26.5% |
| Mixed private funds | 1.9% | 4 | +484.9% |
| Private funds, type not stated | 0.1% | 2 | +4.7% |
| No private funds | 9.5% | 70 | +10.4% |
| Unknown | 63.1% | 140 | +1.9% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 89.3% | 233 | +9.2% |
| Outside the US | 10.7% | 52 | -1.3% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
285 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $1,530,572 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 78.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies IDYA's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | STOK Stoke Therapeutics, Inc. | 9 |
| 2 | TNGX Tango Therapeutics, Inc. | 11 |
| 3 | GPCR Structure Therapeutics Inc. | 11 |
| 4 | WVE Wave Life Sciences, Inc. | 8 |
| 5 | SVRA Savara Inc | 9 |
| 6 | IRON Disc Medicine, Inc. | 9 |
| 7 | DNTH Dianthus Therapeutics, Inc. /DE/ | 11 |
| 8 | XENE Xenon Pharmaceuticals Inc. | 11 |
| 9 | RCUS Arcus Biosciences, Inc. | 7 |
| 10 | PMVP PMV Pharmaceuticals, Inc. | 5 |
Shareholder Targets
13F filers that own its peers but not IDYA, quarter ended Jun 30, 2026Found through its holder-overlap peers: STOK, TNGX, GPCR, WVE, SVRA, IRON, DNTH, XENE, RCUS, PMVP, DSGN, NGNE, COGT, MLYS, SKYE, LRMR, CLDX, IMNM, PRAX, MDGL. 618 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Avoro Capital Advisors LLC Registered adviser, Concentrated | $1,684,991,409 3 held | MDGL, GPCR, XENE |
| 2 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,085,701,461 7 held | IMNM, DNTH, XENE |
| 3 | GILEAD SCIENCES, INC. Unknown, Concentrated | $968,825,350 1 held | RCUS |
| 4 | Driehaus Capital Management LLC Registered adviser, Diversified active | $955,065,354 11 held | PRAX, XENE, IMNM |
| 5 | Polar Capital Holdings Plc Registered adviser, Diversified active | $895,589,944 9 held | XENE, MDGL, COGT |
| 6 | TCG Crossover Management, LLC Unknown, Diversified active | $809,477,291 5 held | TNGX, COGT, DNTH |
| 7 | PERCEPTIVE ADVISORS LLC Registered adviser, Diversified active | $791,878,645 3 held | PRAX, TNGX, COGT |
| 8 | PAULSON & CO. INC. Adviser, Concentrated | $719,523,739 1 held | MDGL |
| 9 | Siren, L.L.C. Unknown, Diversified active | $604,019,811 8 held | TNGX, XENE, RCUS |
| 10 | Deep Track Capital, LP Adviser, Diversified active | $572,457,472 4 held | GPCR, TNGX, CLDX |
Fund Ownership of IDYA by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 15.85% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.14% | 3,029,644 |
| Index ETFs | 12.71% | 12,264,398 |
| Active ETFs | 0.80% | 775,865 |
| Active funds | 24.26% | 23,412,670 |
| Unclassified | 0.23% | 220,878 |
| All registered funds | 41.15% | 39,703,455 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega FMR LLC Holding company | $525,858,493 | 13.70% | 14,109,431 | Shares | 2026-08-13 | |
| Mega BlackRock, Inc. Holding company | $331,451,793 | 8.64% | 8,893,260 | Shares | 2026-08-07 | |
| Mega Jupiter Topco LLC | $319,772,164 | 8.33% | 8,579,881 | Shares | 2026-08-14 | |
| Mega Capital Research Global Investors Adviser | $199,197,006 | 5.19% | 5,344,701 | Shares | 2026-08-12 | |
| Large BAKER BROS. ADVISORS LP Registered adviser | $186,723,818 | 4.87% | 5,010,030 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $169,537,912 | 4.42% | 4,548,911 | Shares | 2026-09-22 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $154,023,716 | 4.01% | 4,132,646 | Shares | 2026-08-13 | |
| Mid Logos Global Management LP Registered adviser | $111,810,000 | 2.91% | 3,000,000 | Shares | 2026-08-14 | |
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser | $101,202,622 | 2.64% | 2,715,391 | Shares | 2026-08-14 | |
| Mid DEERFIELD MANAGEMENT COMPANY, L.P. Registered adviser | $101,169,526 | 2.64% | 2,714,503 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $90,402,186 | 2.36% | 2,425,602 | Shares | 2026-08-12 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $82,271,697 | 2.14% | 2,207,451 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $71,986,667 | 1.88% | 1,931,491 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $61,915,940 | 1.61% | 1,661,281 | Shares | 2026-08-11 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $60,657,707 | 1.58% | 1,627,521 | Shares | 2026-08-14 | |
| Large Fiera Capital Corp Non-US | $53,888,133 | 1.40% | 1,445,885 | Shares | 2026-08-07 | |
| Large FEDERATED HERMES, INC. Adviser | $53,356,850 | 1.39% | 1,431,630 | Shares | 2026-08-12 | |
| Small GSK plc | $49,693,320 | 1.30% | 1,333,333 | Shares | 2026-08-13 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $47,328,761 | 1.23% | 1,269,889 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $45,902,252 | 1.20% | 1,231,614 | Shares | 2026-08-14 | |
| Large Candriam S.C.A. Registered adviser | $40,710,058 | 1.06% | 1,092,301 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $38,244,347 | 1.00% | 1,026,143 | Shares | 2026-08-14 | |
| Mid Sofinnova Investments, Inc. | $34,479,185 | 0.90% | 925,119 | Shares | 2026-08-14 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $33,230,230 | 0.87% | 891,608 | Shares | 2026-08-13 | |
| Mega Fisher Asset Management, LLC Adviser | $31,728,174 | 0.83% | 851,306 | Shares | 2026-08-04 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $30,621,479 | 0.80% | 821,612 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $29,969,475 | 0.78% | 804,118 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $28,134,675 | 0.73% | 754,888 | Shares | 2026-08-14 | |
| Mega Pictet Asset Management Holding SA | $26,561,359 | 0.69% | 712,674 | Shares | 2026-07-30 | |
| Mega UBS Group AG Bank | $24,475,991 | 0.64% | 656,721 | Shares | 2026-08-13 | |
| Mega Nuveen, LLC | $23,862,377 | 0.62% | 640,257 | Shares | 2026-08-11 | |
| Mid Redmile Group, LLC Registered adviser | $23,860,328 | 0.62% | 640,202 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $23,145,601 | 0.60% | 621,025 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $22,081,468 | 0.58% | 592,473 | Shares | 2026-08-14 | |
| Large Aberdeen Group plc Holding company | $20,906,010 | 0.54% | 560,934 | Shares | 2026-07-31 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $18,709,167 | 0.49% | 501,990 | Shares | 2026-07-29 | |
| Small DAFNA Capital Management LLC Registered adviser | $18,532,134 | 0.48% | 497,240 | Shares | 2026-08-14 | |
| Small Sio Capital Management, LLC Adviser | $17,903,874 | 0.47% | 480,383 | Shares | 2026-08-14 | |
| Mid TANG CAPITAL MANAGEMENT LLC | $16,771,500 | 0.44% | 450,000 | Shares | 2026-08-14 | |
| Mid Affinity Asset Advisors, LLC Registered adviser | $14,908,000 | 0.39% | 400,000 | Shares | 2026-08-13 | |
| Large Walleye Capital LLC Registered adviser | $14,393,040 | 0.38% | 386,183 | Shares | 2026-08-03 | |
| Large RTW INVESTMENTS, LP Registered adviser | $13,803,689 | 0.36% | 370,370 | Shares | 2026-08-14 | |
| Mid Rhenman & Partners Asset Management AB | $12,813,426 | 0.33% | 343,800 | Shares | 2026-08-13 | |
| Mid BIT Capital GmbH Non-US | $11,603,380 | 0.30% | 311,333 | Shares | 2026-08-12 | |
| Mid GENERAL AMERICAN INVESTORS CO INC Registered fund | $11,488,104 | 0.30% | 308,240 | Shares | 2026-07-31 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $11,431,789 | 0.30% | 306,729 | Shares | 2026-08-11 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $11,197,324 | 0.29% | 300,438 | Shares | 2026-09-02 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $11,100,793 | 0.29% | 297,848 | Shares | 2026-08-14 | |
| Large Balyasny Asset Management L.P. Registered adviser | $11,090,247 | 0.29% | 297,565 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $10,267,885 | 0.27% | 275,500 | Call | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $9,969,499 | 0.26% | 267,494 | Shares | 2026-08-12 | |
| Large Ensign Peak Advisors, Inc | $9,957,873 | 0.26% | 267,182 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $9,884,112 | 0.26% | 265,203 | Shares | 2026-08-06 | |
| Mega JENNISON ASSOCIATES LLC Registered adviser | $9,263,793 | 0.24% | 248,559 | Shares | 2026-08-03 | |
| Large Man Group plc | $9,149,486 | 0.24% | 245,492 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $8,579,888 | 0.22% | 230,209 | Shares | 2026-08-13 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $8,352,542 | 0.22% | 224,109 | Shares | 2026-09-23 | |
| Mega AMERICAN CENTURY COMPANIES INC | $7,804,114 | 0.20% | 209,394 | Shares | 2026-08-12 | |
| Mid SummitTX Capital, L.P. Registered adviser | $7,635,579 | 0.20% | 204,872 | Shares | 2026-08-14 | |
| Mid Susquehanna Portfolio Strategies, LLC | $7,627,640 | 0.20% | 204,659 | Shares | 2026-08-14 | |
| Large Woodline Partners LP Registered adviser | $7,516,129 | 0.20% | 201,667 | Shares | 2026-08-14 | |
| Mid Burkehill Global Management, LP Registered adviser | $7,454,000 | 0.19% | 200,000 | Shares | 2026-08-14 | |
| Small SPHERA FUNDS MANAGEMENT LTD. Exempt adviser | $7,320,126 | 0.19% | 196,408 | Shares | 2026-08-14 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $6,970,123 | 0.18% | 187,017 | Shares | 2026-08-13 | |
| Large Verition Fund Management LLC Registered adviser | $6,859,692 | 0.18% | 184,054 | Shares | 2026-08-14 | |
| Large WCM INVESTMENT MANAGEMENT, LLC Registered adviser | $6,476,966 | 0.17% | 173,785 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6,365,716 | 0.17% | 170,800 | Put | 2026-08-14 | |
| Mega Swiss National Bank | $5,911,022 | 0.15% | 158,600 | Shares | 2026-08-11 | |
| Mega ROYAL BANK OF CANADA Bank | $5,894,322 | 0.15% | 158,152 | Shares | 2026-08-14 | |
| Large CONGRESS ASSET MANAGEMENT CO Registered adviser | $5,674,480 | 0.15% | 147,696 | Shares | 2026-10-06 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $5,641,932 | 0.15% | 151,380 | Shares | 2026-08-07 | |
| Mega Creative Planning Registered adviser | $5,612,190 | 0.15% | 150,582 | Shares | 2026-08-13 | |
| Mid Rheos Capital Works Inc. | $5,590,500 | 0.15% | 150,000 | Shares | 2026-08-07 | |
| Mid Tema ETFs LLC Registered adviser | $5,577,854 | 0.15% | 145,181 | Shares | 2026-10-16 | |
| Mega Invesco Ltd. Adviser | $5,412,347 | 0.14% | 145,220 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $5,340,226 | 0.14% | 143,285 | Shares | 2026-08-13 | |
| Small PLATINUM INVESTMENT MANAGEMENT LTD | $5,169,647 | 0.13% | 138,708 | Shares | 2026-08-13 | |
| Mid FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. | $5,155,782 | 0.13% | 138,336 | Shares | 2026-07-23 | |
| Large Tidal Investments LLC Registered adviser | $5,063,017 | 0.13% | 135,847 | Shares | 2026-08-13 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $4,625,877 | 0.12% | 124,118 | Shares | 2026-08-12 | |
| Mega TD Asset Management Inc | $4,422,830 | 0.12% | 118,670 | Shares | 2026-08-04 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $4,204,056 | 0.11% | 112,800 | Shares | 2026-08-06 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $4,165,444 | 0.11% | 111,764 | Shares | 2026-08-12 | |
| Mega CITIGROUP INC Bank | $4,135,851 | 0.11% | 110,970 | Shares | 2026-08-03 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $4,009,692 | 0.10% | 107,585 | Shares | 2026-09-09 | |
| Small Odyssean, LLC Registered adviser | $3,823,231 | 0.10% | 102,582 | Shares | 2026-08-14 | |
| Mid Integral Health Asset Management, LLC Registered adviser | $3,727,000 | 0.10% | 100,000 | Shares | 2026-08-14 | |
| Small Atle Fund Management AB | $3,521,195 | 0.09% | 94,478 | Shares | 2026-07-24 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $3,500,994 | 0.09% | 93,936 | Shares | 2026-08-24 | |
| Mega DEUTSCHE BANK AG\ Non-US | $3,497,564 | 0.09% | 93,844 | Shares | 2026-08-07 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $3,359,331 | 0.09% | 90,135 | Shares | 2026-08-13 | |
| Large ALPS ADVISORS INC Registered adviser | $3,308,420 | 0.09% | 88,769 | Shares | 2026-07-29 | |
| Large GREAT LAKES ADVISORS, LLC Registered adviser | $3,270,330 | 0.09% | 87,747 | Shares | 2026-08-10 | |
| Mega JANE STREET GROUP, LLC | $3,018,870 | 0.08% | 81,000 | Put | 2026-08-14 | |
| Mega Legal & General Group Plc | $2,998,781 | 0.08% | 80,461 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $2,985,327 | 0.08% | 80,100 | Call | 2026-08-03 | |
| Small KVP Capital Advisors, LP Registered adviser | $2,970,419 | 0.08% | 79,700 | Shares | 2026-08-13 | |
| Mid MARTINGALE ASSET MANAGEMENT L P Registered adviser | $2,622,317 | 0.07% | 70,360 | Shares | 2026-08-13 | |
| Mega SEI INVESTMENTS CO | $2,571,107 | 0.07% | 68,986 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $2,533,462 | 0.07% | 67,976 | Shares | 2026-08-14 |
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