Latest Period
Q2 2026
Security Snapshot
IDEAYA Biosciences, Inc. - Common Stock, par value $0.0001 per share (IDYA) Institutional Ownership
CUSIP: 45166A102
13F Institutional Holders and Ownership History from Q2 2019 to Q2 2026
Institutions Reporting
284
Shares (Excl. Options)
102,247,815
Price
$37.27
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- IDYA on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 102,247,815
- Total 13F value
- $3,803,735,330
- Portfolio coverage rank
- 0%
- Share change
- +6,182,554
- Value change
- +$232,972,794
- Number of holders
- 284
- Shares outstanding
- 96,346,731
- SEC-reported price per share
- $36.68
- Insider filing price
- $36.68
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- IDYA - IDEAYA Biosciences, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 45166A102.
- 284 institutions reported positions in Q2 2026.
- 7 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 252 to 284 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $3,153,307,329 to $3,803,735,330.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 284 institutions filings for Q2 2026.
Security key
45166A102
Latest holder period
Q2 2026
13F holders
284
13D/G owners
7
CIK / CUSIP context first
Open Q2 2026 holders
IDYA full holder history
IDEAYA Biosciences, Inc. SEC filings
IDEAYA Biosciences, Inc. company facts
IDEAYA Biosciences, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 45166A102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
7
Security
IDYA
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 8.3% | +14% | $242,078,230 | +$27,885,974 | 7,265,253 | +13% | JANUS HENDERSON GROUP PLC | 31 Mar 2026 |
| BlackRock, Inc. | 8.1% | -16% | $135,978,768 | -$23,753,077 | 7,130,507 | -15% | BlackRock, Inc. | 31 Mar 2025 |
| Capital Research Global Investors | 6% | -19% | $194,503,227 | -$46,897,909 | 5,279,675 | -19% | Capital Research Global Investors | 31 Dec 2025 |
| BAKER BROS. ADVISORS LP | 5.2% | $181,212,785 | 5,010,030 | Baker Bros. Advisors LP | 30 Jun 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.1% | $174,873,667 | 4,834,771 | Vanguard Capital Management | 30 Jun 2026 | |||
| FEDERATED HERMES, INC. | 3.9% | $117,393,162 | 3,395,771 | Federated Hermes, Inc. | 31 Dec 2025 | |||
| Point72 Asset Management, L.P. | 2.1% | -58% | $67,953,443 | -$94,600,552 | 1,844,556 | -58% | Point72 Asset Management, L.P. | 31 Dec 2025 |
As of 30 Jun 2026, 284 institutional investors reported holding 102,247,815 shares of IDEAYA Biosciences, Inc. - Common Stock, par value $0.0001 per share (IDYA). This represents 106% of the company’s total 96,346,731 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
83%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| FMR LLC | 15% | 14,109,431 | +7.1% | 0.02% | $525,858,476 |
| BlackRock, Inc. | 9.2% | 8,893,260 | +5.3% | 0% | $331,451,800 |
| Jupiter Topco LLC | 8.9% | 8,579,881 | 0% | 0.13% | $319,727,906 |
| Capital Research Global Investors | 5.5% | 5,344,701 | +3.5% | 0.03% | $199,197,006 |
| BAKER BROS. ADVISORS LP | 5.2% | 5,010,030 | +27% | 0.94% | $186,723,818 |
| STATE STREET CORP | 4.7% | 4,548,911 | +20% | 0.01% | $169,537,913 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.3% | 4,132,646 | +11% | 0% | $154,023,716 |
| Logos Global Management LP | 3.1% | 3,000,000 | -13% | 4.8% | $111,810,000 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2.8% | 2,715,391 | -3.8% | 0.14% | $101,202,623 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 2.8% | 2,714,503 | +77% | 1.1% | $101,169,527 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 2,425,602 | -3% | 0% | $90,418,771 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 2.3% | 2,207,451 | +68% | 0.01% | $82,273,000 |
| MORGAN STANLEY | 2% | 1,931,490 | +3.8% | 0% | $71,986,661 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 1,661,281 | +25% | 0.01% | $61,910,774 |
| ALLIANCEBERNSTEIN L.P. | 1.7% | 1,627,521 | +1515% | 0.02% | $54,229,000 |
| Fiera Capital Corp | 1.5% | 1,445,885 | -43% | 0.2% | $53,888,134 |
| FEDERATED HERMES, INC. | 1.5% | 1,431,630 | -52% | 0.08% | $53,356,850 |
| GSK plc | 1.4% | 1,333,333 | 0% | 8.3% | $49,693,321 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.3% | 1,269,889 | +15% | 0.05% | $47,328,764 |
| GOLDMAN SACHS GROUP INC | 1.3% | 1,231,614 | -26% | 0% | $45,902,254 |
| Candriam S.C.A. | 1.1% | 1,092,301 | -1.4% | 0.18% | $40,670,890 |
| BANK OF AMERICA CORP /DE/ | 1.1% | 1,026,143 | +8.9% | 0% | $38,244,349 |
| Sofinnova Investments, Inc. | 0.96% | 925,119 | -18% | 1.8% | $34,479,185 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.93% | 891,608 | 0.01% | $33,230,230 | |
| Fisher Asset Management, LLC | 0.88% | 851,306 | -3.6% | 0.01% | $31,728,173 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
29
Latest
Q2 2026
Rows shown
1-25 of 29
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 102,247,815 | $3,803,735,330 | +$232,972,794 | $37.27 | 284 |
| 2026 Q1 | 94,667,079 | $3,153,307,329 | -$29,071,239 | $33.32 | 252 |
| 2025 Q4 | 95,917,564 | $3,316,385,878 | +$34,324,785 | $34.57 | 244 |
| 2025 Q3 | 94,078,963 | $2,559,895,530 | -$71,222,974 | $27.21 | 221 |
| 2025 Q2 | 96,817,428 | $2,035,216,946 | +$85,041,555 | $21.02 | 201 |
| 2025 Q1 | 93,850,250 | $1,541,886,881 | +$4,216,022 | $16.38 | 204 |
| 2024 Q4 | 91,956,771 | $2,362,946,798 | -$39,164,259 | $25.70 | 204 |
| 2024 Q3 | 91,887,231 | $2,910,570,888 | +$266,023,831 | $31.68 | 208 |
| 2024 Q2 | 82,498,020 | $2,896,457,095 | +$112,714,519 | $35.11 | 197 |
| 2024 Q1 | 79,029,194 | $3,467,731,111 | +$578,501,456 | $43.88 | 202 |
| 2023 Q4 | 66,135,600 | $2,353,088,646 | +$312,448,429 | $35.58 | 155 |
| 2023 Q3 | 59,708,967 | $1,610,925,530 | +$91,466,602 | $26.98 | 143 |
| 2023 Q2 | 56,594,046 | $1,329,917,026 | +$272,378,345 | $23.50 | 138 |
| 2023 Q1 | 45,571,754 | $625,396,958 | -$7,022,953 | $13.73 | 127 |
| 2022 Q4 | 45,969,604 | $835,255,954 | +$24,122,546 | $18.17 | 117 |
| 2022 Q3 | 44,731,101 | $667,335,427 | +$139,348,641 | $14.92 | 111 |
| 2022 Q2 | 35,430,856 | $488,943,386 | +$8,388,194 | $13.80 | 95 |
| 2022 Q1 | 34,963,082 | $391,248,464 | -$45,848,010 | $11.19 | 100 |
| 2021 Q4 | 34,726,651 | $820,669,496 | +$42,947,568 | $23.64 | 108 |
| 2021 Q3 | 32,866,465 | $837,907,234 | +$191,179,767 | $25.49 | 90 |
| 2021 Q2 | 25,401,939 | $533,388,213 | +$25,544,214 | $20.99 | 83 |
| 2021 Q1 | 23,772,357 | $605,123,340 | +$111,002,539 | $23.50 | 87 |
| 2020 Q4 | 20,283,687 | $283,967,278 | +$21,355,133 | $14.00 | 81 |
| 2020 Q3 | 18,878,265 | $237,100,196 | +$3,530,187 | $12.56 | 66 |
| 2020 Q2 | 18,472,023 | $262,487,409 | +$120,236,682 | $14.21 | 64 |