IDEAYA BIOSCIENCES INC (IDYA) Institutional Shareholders
IDEAYA BIOSCIENCES INC (IDYA) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.11B in IDYA holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of IDYA tracked by InsiderSet, reporting ownership valued at approximately $438.89M in its March 31, 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 $467.61M, representing an estimated gain of +6.54% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% 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
252
Total Reported Value
$3.11B
Largest Holder
Fmr Llc
Largest Position
$438.89M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
104
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% | 13,172,103 | $438,894,479 | $467,609,657 | +$28,715,178 | +6.54% | |
| Blackrock, Inc. | 0.00% | 8,442,133 | $281,291,873 | $299,695,722 | +$18,403,849 | +6.54% | |
| Janus Henderson Group Plc | 0.12% | 7,265,253 | $242,023,014 | $257,916,482 | +$15,893,468 | +6.57% | |
| Capital Research Global Investors | 0.03% | 5,163,543 | $172,049,253 | $183,305,777 | +$11,256,524 | +6.54% | |
| Baker Bros. Advisors Lp | 0.76% | 3,946,515 | $131,497,880 | $140,101,283 | +$8,603,403 | +6.54% | |
| State Street Corp | 0.00% | 3,781,167 | $125,988,484 | $134,231,429 | +$8,242,945 | +6.54% | |
| Vanguard Capital Management Llc | 0.00% | 3,732,422 | $124,364,301 | $132,500,981 | +$8,136,680 | +6.54% | |
| Logos Global Management Lp | 5.92% | 3,450,000 | $114,954,000 | $122,475,000 | +$7,521,000 | +6.54% | |
| Federated Hermes, Inc. | 0.16% | 2,987,107 | $99,530,405 | $106,042,299 | +$6,511,894 | +6.54% | |
| Adage Capital Partners Gp, L.L.C. | 0.15% | 2,823,500 | $94,079,020 | $100,234,250 | +$6,155,230 | +6.54% | |
| Fiera Capital Corp | 0.29% | 2,527,076 | $84,202,173 | $89,711,198 | +$5,509,025 | +6.54% | |
| Geode Capital Management, Llc | 0.01% | 2,500,724 | $83,337,454 | $88,775,702 | +$5,438,248 | +6.53% | |
| Morgan Stanley | 0.00% | 1,860,453 | $61,990,332 | $66,046,082 | +$4,055,750 | +6.54% | |
| Goldman Sachs Group Inc | 0.01% | 1,655,617 | $55,165,159 | $58,774,404 | +$3,609,245 | +6.54% | |
| Deerfield Management Company, L.P. | 0.60% | 1,530,008 | $50,979,867 | $54,315,284 | +$3,335,417 | +6.54% | |
| Gsk Plc | 7.41% | 1,333,333 | $44,426,656 | $47,333,322 | +$2,906,666 | +6.54% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,333,478 | $44,417,991 | $47,338,469 | +$2,920,478 | +6.57% | |
| Sofinnova Investments, Inc. | 1.89% | 1,131,786 | $37,711,110 | $40,178,403 | +$2,467,293 | +6.54% | |
| Candriam S.C.A. | 0.19% | 1,107,708 | $36,908,831 | $39,323,634 | +$2,414,803 | +6.54% | |
| Bnp Paribas Asset Management Holding S.A. | 0.04% | 1,101,145 | $36,690,151 | $39,090,648 | +$2,400,497 | +6.54% | |
| Bank Of America Corp | 0.00% | 942,091 | $31,390,473 | $33,444,231 | +$2,053,758 | +6.54% | |
| Ensign Peak Advisors, Inc | 0.06% | 899,504 | $29,971,473 | $31,932,392 | +$1,960,919 | +6.54% | |
| Fisher Asset Management, Llc | 0.01% | 882,699 | $29,411,528 | $31,335,815 | +$1,924,287 | +6.54% | |
| First Turn Management, Llc | 3.25% | 873,838 | $29,116,282 | $31,021,249 | +$1,904,967 | +6.54% | |
| Pictet Asset Management Holding Sa | 0.03% | 712,674 | $26,561,360 | $25,299,927 | -$1,261,433 | -4.75% | |
| Ubs Group Ag | 0.00% | 762,548 | $25,408,099 | $27,070,454 | +$1,662,355 | +6.54% | |
| Vanguard Portfolio Management Llc | 0.00% | 745,593 | $24,843,159 | $26,468,552 | +$1,625,393 | +6.54% | |
| Northern Trust Corp | 0.00% | 734,121 | $24,460,911 | $26,061,296 | +$1,600,385 | +6.54% | |
| Charles Schwab Investment Management Inc | 0.00% | 715,527 | $23,841,360 | $25,401,209 | +$1,559,849 | +6.54% | |
| Citadel Advisors Llc | 0.02% | 679,400 | $22,637,608 | $24,118,700 | +$1,481,092 | +6.54% | |
| Aberdeen Group Plc | 0.03% | 560,934 | $20,906,010 | $19,913,157 | -$992,853 | -4.75% | |
| Qube Research & Technologies Ltd | 0.03% | 584,033 | $19,459,980 | $20,733,172 | +$1,273,192 | +6.54% | |
| Vanguard Fiduciary Trust Co | 0.00% | 561,563 | $18,711,279 | $19,935,487 | +$1,224,208 | +6.54% | |
| New York State Common Retirement Fund | 0.02% | 501,990 | $18,709,167 | $17,820,645 | -$888,522 | -4.75% | |
| Redmile Group, Llc | 1.15% | 521,117 | $17,363,618 | $18,499,654 | +$1,136,036 | +6.54% | |
| Dafna Capital Management Llc | 3.61% | 476,740 | $15,884,977 | $16,924,270 | +$1,039,293 | +6.54% | |
| Tang Capital Management Llc | 0.76% | 450,000 | $14,994,000 | $15,975,000 | +$981,000 | +6.54% | |
| Nuveen, Llc | 0.00% | 448,273 | $14,936,457 | $15,913,692 | +$977,235 | +6.54% | |
| Deutsche Bank Ag\ | 0.00% | 378,442 | $12,609,687 | $13,434,691 | +$825,004 | +6.54% | |
| General American Investors Co Inc | 0.70% | 308,240 | $11,488,105 | $10,942,520 | -$545,585 | -4.75% | |
| Point72 Asset Management, L.P. | 0.02% | 327,901 | $10,925,661 | $11,640,486 | +$714,825 | +6.54% | |
| Envestnet Asset Management Inc | 0.00% | 256,318 | $8,540,516 | $9,099,289 | +$558,773 | +6.54% | |
| Jennison Associates Llc | 0.01% | 255,764 | $8,522,057 | $9,079,622 | +$557,565 | +6.54% | |
| Rhenman & Partners Asset Management Ab | 1.05% | 255,500 | $8,513,260 | $9,070,250 | +$556,990 | +6.54% | |
| Bank Of New York Mellon Corp | 0.00% | 250,325 | $8,340,824 | $8,886,538 | +$545,714 | +6.54% | |
| Nicholas Investment Partners, Lp | 0.60% | 248,202 | $8,270,091 | $8,811,171 | +$541,080 | +6.54% | |
| Wells Fargo & Company/Mn | 0.00% | 243,328 | $8,107,689 | $8,638,144 | +$530,455 | +6.54% | |
| American Century Companies Inc | 0.00% | 241,508 | $8,047,047 | $8,573,534 | +$526,487 | +6.54% | |
| Franklin Resources Inc | 0.00% | 230,268 | $7,672,529 | $8,174,514 | +$501,985 | +6.54% | |
| Millennium Management Llc | 0.01% | 228,980 | $7,629,614 | $8,128,790 | +$499,176 | +6.54% |
Frequently asked questions about IDYA
Who owns the most IDYA stock?
The largest holders of IDYA are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for IDEAYA BIOSCIENCES INC (IDYA).
Is IDYA widely held by superinvestors?
Many widely followed stocks like IDYA appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IDYA is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.