IDEAYA Biosciences
IDYA
285 hedge funds and large institutions have $3.8B invested in IDEAYA Biosciences in 2026 Q2 according to their latest regulatory filings, with 67 funds opening new positions, 92 increasing their positions, 88 reducing their positions, and 34 closing their positions.
169% more capital inflows, than outflows
Capital inflows: $713M | Capital outflows: $266M
97% more first-time investments, than exits
New positions opened: 67 | Existing positions closed: 34
67% more funds holding in top 10
Funds holding in top 10: 3 → 5 (+2)
43% more call options, than puts
Call options by funds: $15.8M | Put options by funds: $11.1M
12% more funds holding
Funds holding: 254 → 285 (+31)
5% more repeat investments, than reductions
Existing positions increased: 92 | Existing positions reduced: 88
1.87% less ownership
Funds ownership: 107.84% → 105.97% (-1.9%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AllianceBernstein
Nashville,
Tennessee
|
+$46.7M |
| 2 |
Deerfield Management
New York
|
+$36.3M |
| 3 |
BBA
Baker Bros. Advisors
New York
|
+$32.6M |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
+$28.7M |
| 5 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$27.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
-$47.6M |
| 2 |
Fiera Capital (Canada)
Montreal,
Quebec, Canada
|
-$33.1M |
| 3 |
First Turn Management
Del Mar,
California
|
-$29.1M |
| 4 |
Ensign Peak Advisors
Salt Lake City,
Utah
|
-$19.4M |
| 5 |
Logos Global Management
San Francisco,
California
|
-$13.8M |
IDYA Hedge Fund Activity: Q2 2026 in Review
285 of the 8,358 institutional investors tracked by Wall St. Rank reported a position in IDEAYA Biosciences (IDYA) for Q2 2026, worth a combined $3.8B — up 20% from $3.16B a quarter earlier.
Buyers outnumbered sellers: 67 funds opened new IDYA positions and 34 closed out — a net gain of 33 holders — while 92 added to existing stakes and 88 trimmed.
The largest buyer was AllianceBernstein, adding an estimated $46.7M. The largest seller was Federated Hermes, cutting an estimated $47.6M.
- 285 institutional investors held IDEAYA Biosciences (IDYA) as of Q2 2026, up from 254 in Q1 2026.
- Funds reported $3.8B of IDEAYA Biosciences stock for Q2 2026, up 20% quarter-over-quarter.
- 67 funds opened new IDEAYA Biosciences positions in Q2 2026 and 34 closed out, a net change of +33 holders.
- The largest IDEAYA Biosciences buyer in Q2 2026 was AllianceBernstein, an estimated $46.7M added.
- The largest IDEAYA Biosciences seller in Q2 2026 was Federated Hermes, an estimated $47.6M sold.
Based on aggregated 13F filings for Q2 2026.