IDYA IDEAYA Biosciences, Inc
IDEAYA Biosciences, Inc (IDYA) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| RTW Investments Growth Healthcare | New | +370.4K | — | $13.8M | 0.1% | 66 |
| Point72 Asset Management, L.P. | Sold Out | -327.9K | -100.0% | $12.2M | 0.0% | 63 |
| Affinity Asset Advisors Long/Short Growth | New | +400.0K | — | $14.9M | 0.7% | 63 |
| Deerfield Management Growth Healthcare | Increased | +1.18M | +77.4% | $44.1M | 1.3% | 59 |
| Integral Health Asset Management Growth Healthcare | New | +100.0K | — | $3.7M | 0.2% | 59 |
| Alyeska Investment Group, L.P. | Sold Out | -192.3K | -100.0% | $7.2M | 0.0% | 58 |
| D. E. Shaw & Co., Inc. Quant | New | +20.8K | — | $773.8K | 0.0% | 58 |
| Ghisallo Capital Management Long/Short | New | +50.0K | — | $1.9M | 0.0% | 57 |
| Logos Global Management Growth Healthcare | Reduced | -450.0K | -13.0% | $16.8M | 4.8% | 57 |
| Verition Fund Management Event Long/Short | New | +184.1K | — | $6.9M | 0.1% | 56 |
Most significant buyers
By move score, not size.
- RTW Investments
- Affinity Asset Advisors
- Deerfield Management
- Integral Health Asset Management
- D. E. Shaw & Co., Inc.
Most significant sellers
By move score, not size.
- Point72 Asset Management, L.P.
- Alyeska Investment Group, L.P.
- Logos Global Management
- Hudson Bay Capital Management
- MILLENNIUM MANAGEMENT LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| RTW Investments | 1 | 370.4K | 0 | +370.4K | — | 0.1% | New | 66 |
| Point72 Asset Management, L.P. | 1 | 0 | 327.9K | -327.9K | -100.0% | 0.0% | Sold Out | 63 |
| Affinity Asset Advisors | 2 | 400.0K | 0 | +400.0K | — | 0.7% | New | 63 |
| Deerfield Management | 1 | 2.7M | 1.5M | +1.18M | +77.4% | 1.3% | Increased | 59 |
| Integral Health Asset Management | 2 | 100.0K | 0 | +100.0K | — | 0.2% | New | 59 |
| Alyeska Investment Group, L.P. | 2 | 0 | 192.3K | -192.3K | -100.0% | 0.0% | Sold Out | 58 |
| D. E. Shaw & Co., Inc. | 1 | 20.8K | 0 | +20.8K | — | 0.0% | New | 58 |
| Ghisallo Capital Management | 2 | 50.0K | 0 | +50.0K | — | 0.0% | New | 57 |
| Logos Global Management | 2 | 3.0M | 3.5M | -450.0K | -13.0% | 4.8% | Reduced | 57 |
| Verition Fund Management | 2 | 184.1K | 0 | +184.1K | — | 0.1% | New | 56 |
| Walleye Capital | 3 | 386.2K | 0 | +386.2K | — | 0.1% | New | 56 |
| Magnetar Capital | 2 | 5.7K | 0 | +5.7K | — | 0.0% | New | 54 |
| Hudson Bay Capital Management | 3 | 0 | 3.0K | -3.0K | -100.0% | 0.0% | Sold Out | 53 |
| Caption Management | 3 | 30.5K | 0 | +30.5K | — | 0.0% | New | 52 |
| MILLENNIUM MANAGEMENT LLC | 2 | 10.5K | 229.0K | -218.5K | -95.4% | 0.0% | Reduced | 52 |
| Lighthouse Investment Partners | 3 | 25.0K | 0 | +25.0K | — | 0.0% | New | 51 |
| Boothbay Fund Management | 4 | 0 | 27.8K | -27.8K | -100.0% | 0.0% | Sold Out | 51 |
| Y-Intercept | 4 | 0 | 54.6K | -54.6K | -100.0% | 0.0% | Sold Out | 50 |
| Cinctive Capital Management | 3 | 0 | 10.9K | -10.9K | -100.0% | 0.0% | Sold Out | 50 |
| Graham Capital Management | 3 | 0 | 8.8K | -8.8K | -100.0% | 0.0% | Sold Out | 49 |
| CenterBook Partners | 4 | 22.8K | 0 | +22.8K | — | 0.0% | New | 49 |
| Centiva Capital | 4 | 21.8K | 0 | +21.8K | — | 0.0% | New | 48 |
| Aquatic Capital Management | 4 | 1.4K | 0 | +1.4K | — | 0.0% | New | 48 |
| Engineers Gate | 4 | 0 | 8.2K | -8.2K | -100.0% | 0.0% | Sold Out | 48 |
| Baker Bros. Advisors | 1 | 5.0M | 3.9M | +1.06M | +26.9% | 0.9% | Increased | 45 |
| CITADEL ADVISORS LLC | 1 | 300.4K | 679.4K | -379.0K | -55.8% | 0.0% | Reduced | 45 |
| Squarepoint Ops LLC | 2 | 25.2K | 99.3K | -74.1K | -74.6% | 0.0% | Reduced | 44 |
| TWO SIGMA INVESTMENTS, LP | 2 | 41.2K | 119.1K | -77.9K | -65.4% | 0.0% | Reduced | 44 |
| Quantbot Technologies | 4 | 1.1K | 345 | +800 | +231.9% | 0.0% | Increased | 39 |
| Balyasny Asset Management L.P. | 2 | 297.6K | 208.3K | +89.2K | +42.8% | 0.0% | Increased | 39 |
| AQR Capital Management | 3 | 68.0K | 42.2K | +25.8K | +61.2% | 0.0% | Increased | 35 |
| Man Group | 3 | 245.5K | 171.8K | +73.6K | +42.9% | 0.0% | Increased | 34 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 2.7M | 2.8M | -108.1K | -3.8% | 0.1% | Reduced | 28 |
| Qube Research & Technologies Ltd | 2 | 592.5K | 584.0K | +8.4K | +1.4% | 0.0% | Increased | 25 |
| Tudor Investment Corporation | 2 | 45.3K | 42.7K | +2.6K | +6.0% | 0.0% | Increased | 24 |
| Tang Capital Management | 2 | 450.0K | 450.0K | 0 | +0.0% | 0.8% | Unchanged | 23 |
| Woodline Partners LP | 2 | 201.7K | 201.7K | 0 | +0.0% | 0.0% | Unchanged | 18 |
| ADAR1 Capital Management | 3 | 20.0K | 20.0K | 0 | +0.0% | 0.0% | Unchanged | 17 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.