IDYA Institutional Ownership & Shareholders
IDEAYA BIOSCIENCES INC (IDYA) is currently held by 286 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $3.74B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Fmr Llc is currently the largest disclosed institutional shareholder of IDYA tracked by InsiderSet, reporting ownership valued at approximately $525.86M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $450.94M, representing an estimated loss of -14.25% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed IDYA value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., Janus Henderson Group Plc, and several other long-term asset managers with concentrated positions in IDEAYA BIOSCIENCES INC (IDYA).
This page ranks the largest institutional IDYA shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
286
Total Reported Value
$3.74B
Largest Holder
Fmr Llc
Largest Position
$525.86M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
71
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.02% | 14,109,431 | $525,858,476 | $450,937,415 | -$74,921,061 | -14.25% | |
| Blackrock, Inc. | 0.00% | 8,893,260 | $331,451,800 | $284,228,590 | -$47,223,210 | -14.25% | |
| Janus Henderson Group Plc | 0.12% | 7,265,253 | $242,023,014 | $232,197,486 | -$9,825,528 | -4.06% | |
| Capital Research Global Investors | 0.03% | 5,344,701 | $199,197,006 | $170,816,644 | -$28,380,362 | -14.25% | |
| Baker Bros. Advisors Lp | 0.94% | 5,010,030 | $186,723,818 | $160,120,559 | -$26,603,259 | -14.25% | |
| State Street Corp | 0.01% | 4,548,911 | $169,537,913 | $145,383,196 | -$24,154,717 | -14.25% | |
| Vanguard Capital Management Llc | 0.00% | 4,132,646 | $154,023,716 | $132,079,366 | -$21,944,350 | -14.25% | |
| Logos Global Management Lp | 4.81% | 3,000,000 | $111,810,000 | $95,880,000 | -$15,930,000 | -14.25% | |
| Adage Capital Partners Gp, L.L.C. | 0.14% | 2,715,391 | $101,202,623 | $86,783,896 | -$14,418,727 | -14.25% | |
| Deerfield Management Company, L.P. | 1.06% | 2,714,503 | $101,169,527 | $86,755,516 | -$14,414,011 | -14.25% | |
| Geode Capital Management, Llc | 0.00% | 2,425,602 | $90,418,771 | $77,522,240 | -$12,896,531 | -14.26% | |
| Price T Rowe Associates Inc | 0.01% | 2,207,451 | $82,273,000 | $70,550,134 | -$11,722,866 | -14.25% | |
| Morgan Stanley | 0.00% | 1,931,491 | $71,986,727 | $61,730,452 | -$10,256,275 | -14.25% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,661,281 | $61,910,774 | $53,094,541 | -$8,816,233 | -14.24% | |
| Alliancebernstein L.P. | 0.02% | 1,627,521 | $54,229,000 | $52,015,571 | -$2,213,429 | -4.08% | |
| Fiera Capital Corp | 0.20% | 1,445,885 | $53,888,134 | $46,210,485 | -$7,677,649 | -14.25% | |
| Federated Hermes, Inc. | 0.08% | 1,431,630 | $53,356,850 | $45,754,895 | -$7,601,955 | -14.25% | |
| Gsk Plc | 8.25% | 1,333,333 | $49,693,321 | $42,613,323 | -$7,079,998 | -14.25% | |
| Bnp Paribas Asset Management Holding S.A. | 0.05% | 1,269,889 | $47,328,764 | $40,585,652 | -$6,743,112 | -14.25% | |
| Goldman Sachs Group Inc | 0.00% | 1,231,614 | $45,902,254 | $39,362,383 | -$6,539,871 | -14.25% | |
| Candriam S.C.A. | 0.18% | 1,092,301 | $40,670,890 | $34,909,940 | -$5,760,950 | -14.16% | |
| Bank Of America Corp | 0.00% | 1,026,143 | $38,244,349 | $32,795,530 | -$5,448,819 | -14.25% | |
| Sofinnova Investments, Inc. | 1.84% | 925,119 | $34,479,185 | $29,566,803 | -$4,912,382 | -14.25% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 891,608 | $33,230,230 | $28,495,792 | -$4,734,438 | -14.25% | |
| Fisher Asset Management, Llc | 0.01% | 851,306 | $31,728,173 | $27,207,740 | -$4,520,433 | -14.25% | |
| Vanguard Portfolio Management Llc | 0.00% | 821,612 | $30,621,479 | $26,258,720 | -$4,362,759 | -14.25% | |
| Ensign Peak Advisors, Inc | 0.06% | 899,504 | $29,971,473 | $28,748,148 | -$1,223,325 | -4.08% | |
| Northern Trust Corp | 0.00% | 804,118 | $29,969,477 | $25,699,611 | -$4,269,866 | -14.25% | |
| Charles Schwab Investment Management Inc | 0.00% | 754,888 | $28,134,676 | $24,126,220 | -$4,008,456 | -14.25% | |
| Pictet Asset Management Holding Sa | 0.03% | 712,674 | $26,561,360 | $22,777,061 | -$3,784,299 | -14.25% | |
| Ubs Group Ag | 0.00% | 656,721 | $24,475,991 | $20,988,803 | -$3,487,188 | -14.25% | |
| Nuveen, Llc | 0.01% | 640,257 | $23,862,378 | $20,462,614 | -$3,399,764 | -14.25% | |
| Redmile Group, Llc | 1.60% | 640,202 | $23,860,329 | $20,460,856 | -$3,399,473 | -14.25% | |
| Vanguard Fiduciary Trust Co | 0.01% | 621,025 | $23,145,602 | $19,847,959 | -$3,297,643 | -14.25% | |
| Qube Research & Technologies Ltd | 0.02% | 592,473 | $22,081,469 | $18,935,437 | -$3,146,032 | -14.25% | |
| Aberdeen Group Plc | 0.03% | 560,934 | $20,906,010 | $17,927,451 | -$2,978,559 | -14.25% | |
| New York State Common Retirement Fund | 0.02% | 501,990 | $18,709,167 | $16,043,600 | -$2,665,567 | -14.25% | |
| Dafna Capital Management Llc | 3.53% | 497,240 | $18,532,135 | $15,891,790 | -$2,640,345 | -14.25% | |
| Sio Capital Management, Llc | 3.07% | 480,383 | $17,903,874 | $15,353,041 | -$2,550,833 | -14.25% | |
| Tang Capital Management Llc | 0.76% | 450,000 | $16,771,500 | $14,382,000 | -$2,389,500 | -14.25% | |
| Affinity Asset Advisors, Llc | 0.73% | 400,000 | $14,908,000 | $12,784,000 | -$2,124,000 | -14.25% | |
| Walleye Capital Llc | 0.07% | 386,183 | $14,393,040 | $12,342,409 | -$2,050,631 | -14.25% | |
| Rtw Investments, Lp | 0.12% | 370,370 | $13,803,690 | $11,837,025 | -$1,966,665 | -14.25% | |
| Rhenman & Partners Asset Management Ab | 1.21% | 343,800 | $12,813,426 | $10,987,848 | -$1,825,578 | -14.25% | |
| General American Investors Co Inc | 0.71% | 308,240 | $11,842,581 | $9,851,350 | -$1,991,231 | -16.81% | |
| Bit Capital Gmbh | 0.40% | 311,333 | $11,603,381 | $9,950,203 | -$1,653,178 | -14.25% | |
| First Trust Advisors Lp | 0.01% | 306,729 | $11,431,789 | $9,803,059 | -$1,628,730 | -14.25% | |
| Citadel Advisors Llc | 0.01% | 300,438 | $11,197,324 | $9,601,998 | -$1,595,326 | -14.25% | |
| Wells Fargo & Company/Mn | 0.00% | 297,848 | $11,100,795 | $9,519,222 | -$1,581,573 | -14.25% | |
| Balyasny Asset Management L.P. | 0.02% | 297,565 | $11,090,248 | $9,510,177 | -$1,580,071 | -14.25% |
Frequently asked questions about IDYA
Who are the largest institutional holders of IDYA?
The largest institutional holders of IDYA reported in the latest SEC Form 13F filings include Fmr Llc, Blackrock, Inc., Janus Henderson Group Plc, Capital Research Global Investors, and Baker Bros. Advisors Lp. InsiderSet ranks institutional holders by their latest reported IDYA position.
What is IDYA institutional ownership?
This page tracks IDYA positions reported by institutional investment managers through SEC Form 13F. IDEAYA BIOSCIENCES INC (IDYA) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own IDYA?
InsiderSet currently tracks 286 institutional managers reporting IDYA holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of IDYA shareholders.
How much IDYA stock do institutions own?
Institutional investment managers disclosed approximately $3.74B in IDYA holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was IDYA institutional ownership last updated?
The latest IDYA institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional IDYA holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its IDYA position after the reporting date.
Are institutions buying or selling IDYA?
Institutional buying and selling can be analyzed by comparing IDYA positions across consecutive 13F reporting periods. InsiderSet's IDYA Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View IDYA ownership changes.
How has IDYA institutional ownership changed over time?
InsiderSet tracks IDYA institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.