IDEAYA Biosciences Ownership | Who Owns IDEAYA Biosciences?
IDEAYA Biosciences Ownership Summary
IDEAYA Biosciences is owned by 24.15% institutional investors, 2.41% insiders, and 73.44% retail investors. Fmr is the largest institutional shareholder, holding 14.87% of IDYA shares. Fidelity Growth Compy Commingled Pl S is the top mutual fund, with 6.76% of its assets in IDEAYA Biosciences shares.
IDYA Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | IDEAYA Biosciences | 24.15% | 2.41% | 73.44% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Biotech Stocks | 35.75% | 11.83% | 52.41% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 13.17M | 14.87% | $438.89M |
| Blackrock funding, inc. /de | 8.44M | 9.53% | $281.29M |
| Blackrock | 6.81M | 8.73% | $239.02M |
| Janus henderson group | 7.27M | 8.20% | $242.02M |
| Capital research global investors | 5.16M | 5.83% | $172.05M |
| Vanguard group | 5.02M | 5.60% | $173.52M |
| Baker bros. advisors lp | 3.95M | 4.46% | $131.50M |
| State street | 3.78M | 4.27% | $125.99M |
| Logos global management lp | 3.45M | 3.89% | $114.95M |
| Federated hermes | 2.99M | 3.37% | $99.53M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Gsk | 1.33M | 7.41% | $44.43M |
| Logos global management lp | 3.45M | 5.74% | $114.95M |
| Boxer capital | 2.20M | 4.07% | $77.34M |
| Dafna capital management | 476.74K | 3.61% | $15.88M |
| First turn management | 873.84K | 3.25% | $29.12M |
| Sofinnova investments | 1.13M | 1.43% | $37.71M |
| Healthinvest partners ab | 31.13K | 1.30% | $4.01M |
| Redmile group | 521.12K | 1.15% | $17.36M |
| Acuta capital partners | 48.23K | 1.13% | $1.61M |
| Rhenman & partners asset management ab | 255.50K | 1.05% | $8.51M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 6.81M | 0.01% | 842.38K |
| Morgan stanley | 1.86M | 0.00% | 608.05K |
| Vanguard fiduciary trust | 561.56K | 0.00% | 561.56K |
| Geode capital management | 2.50M | 0.01% | 427.14K |
| Bnp paribas asset management | 1.10M | 0.04% | 403.22K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Point72 asset management | 327.90K | 0.01% | -1.52M |
| Bvf inc/il | - | - | -1.41M |
| Ra capital management | - | - | -1.35M |
| Samlyn capital | - | - | -791.27K |
| Macquarie group | - | - | -638.88K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 561.56K | 0.00% | 561.56K | $18.71M |
| Axa investment managers | 325.51K | 0.02% | 325.51K | $8.86M |
| Iron triangle partners lp | 270.00K | 1.04% | 270.00K | $7.35M |
| Jennison associates | 255.76K | 0.01% | 255.76K | $8.52M |
| Toroso investments | 112.31K | 0.01% | 112.31K | $3.74M |
Sold Out
| Holder | Change |
|---|---|
| Sjs investment consulting | -1.00 |
| Capital performance advisors llp | -1.00 |
| Td private client wealth | -4.00 |
| Skopos labs | -4.00 |
| Geneos wealth management | -15.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 127 | -49.60% | 21,391,524 | -77.70% | 24 | 0.21% | 58 | -57.97% | 37 | -50.00% |
| Dec 31, 2025 | 179 | -21.15% | 52,131,217 | -44.59% | 58 | 0.51% | 101 | -20.47% | 49 | -27.94% |
| Sep 30, 2025 | 218 | 5.83% | 92,968,998 | -3.97% | 105 | 0.88% | 123 | 16.04% | 67 | -11.84% |
| Jun 30, 2025 | 205 | -0.97% | 96,799,776 | 3.14% | 109 | 0.97% | 105 | -20.45% | 76 | 61.70% |
| Mar 31, 2025 | 13 | -93.69% | 10,891,961 | -88.15% | 12 | 0.11% | 8 | -93.65% | 2 | -96.36% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 5.94M | 6.76% | 8.12K |
| Fidelity Growth Compy Commingled Pl O | 5.35M | 6.33% | 82.95K |
| American Funds SMALLCAP World A | 4.68M | 5.33% | -108.39K |
| Fidelity Growth Company Fund | 4.17M | 4.74% | - |
| Vanguard Total Stock Mkt Idx Inv | 2.68M | 3.05% | 10.47K |
| Vanguard US Total Market Shares ETF | 2.49M | 2.85% | 2.78K |
| iShares Russell 2000 ETF | 1.98M | 2.26% | 16.68K |
| Federated Hermes Kaufmann Growth | 1.92M | 2.18% | -98.04K |
| Federated Hermes Kaufmann R | 1.92M | 2.18% | -98.04K |
| State Street® SPDR® S&P® Biotech ETF | 1.82M | 2.07% | -17.95K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 02, 2026 | Stein Jeffrey | - | Buy | $1.65M |
| May 29, 2024 | WHITE MICHAEL ANTHONY | Chief Scientific Officer | Sell | $1.00M |
| May 29, 2024 | WHITE MICHAEL ANTHONY | Chief Scientific Officer | Sell | $31.30K |
| May 14, 2024 | Hata Yujiro S | President and CEO | Sell | $2.26M |
| May 16, 2024 | Hata Yujiro S | President and CEO | Sell | $1.26M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | 1 | - |
| 2025 Q4 | - | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q4 | - | - |
IDYA Ownership FAQ
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