DAWN
Day One Biopharmaceuticals, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth -14.3% ·
share flow -1.7% ·
net new positions -16.7%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q1 2026 | 86 | +1 | 49.82M | $1.05B | +13 | −13 |
| Q4 2025 | 86 | +2 | 51.33M | $478.37M | +3 | — |
| Q3 2025 | 15 | -1 | 35.84M | $252.66M | — | −2 |
| Q2 2025 | 14 | -1 | 36.93M | $240.03M | +1 | −2 |
| Q1 2025 | 12 | -2 | 10.53M | $83.51M | — | −2 |
| Q4 2024 | 14 | 0 | 10.71M | $135.72M | +1 | −1 |
| Q3 2024 | 13 | -1 | 9.77M | $136.05M | +1 | −2 |
| Q2 2024 | 14 | — | 8.62M | $118.84M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 2.71M | -12.7% | $21.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.54M | +5.3% | $12.22M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.54M | +5.3% | $12.22M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Citadel Advisors ✦ | 1.34M | +119.0% | $10.62M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 1.34M | +119.0% | $10.62M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | Millennium Management ✦ | 1.32M | +587.2% | $10.47M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 1.17M | -31.2% | $9.30M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 1.17M | -31.2% | $9.30M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | Marshall Wace ✦ | 887.18K | -19.2% | $7.04M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 887.18K | -19.2% | $7.04M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | AQR Capital Management ✦ | 618.63K | +601.4% | $4.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 618.63K | +601.4% | $4.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 618.63K | +601.4% | $4.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 618.63K | +601.4% | $4.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 618.63K | +601.4% | $4.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | Renaissance Technologies ✦ | 348.44K | +43.0% | $2.76M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 17 | Fisher Asset Management ✦ | 275.21K | +208.8% | $2.18M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 18 | Norges Bank ✦ (passive) | 169.00K | 0.0% | $1.34M | 0.0% | Held | 4 | SEC ↗ |
| 19 | D. E. Shaw & Co. ✦ | 83.07K | -43.2% | $658,745 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 20 | D. E. Shaw & Co. ✦ | 83.07K | -43.2% | $658,745 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 21 | Two Sigma Investments ✦ | 69.89K | -74.3% | $554,267 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Adage Capital Partners | $10.14M | was 0.0% |
| Wellington Management | $9.27M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 206 holders, 83.68M shares, $1.67B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.