CERS
Cerus Corporation · Healthcare · Medical - Devices
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -3.0% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 365.56K | $864,980 | n/a | n/a |
| Q2 2026 | 77 | +3 | 100.93M | $293.62M | +6 | −3 |
| Q1 2026 | 76 | -1 | 93.85M | $170.85M | +2 | −3 |
| Q4 2025 | 77 | +2 | 97.51M | $200.87M | +2 | n/a |
| Q3 2025 | 17 | 0 | 78.06M | $124.11M | n/a | n/a |
| Q2 2025 | 14 | 0 | 72.85M | $102.72M | n/a | n/a |
| Q1 2025 | 11 | -1 | 42.94M | $59.69M | n/a | −1 |
| Q4 2024 | 12 | -1 | 40.64M | $62.59M | n/a | −1 |
| Q3 2024 | 12 | 0 | 39.10M | $68.03M | n/a | n/a |
| Q2 2024 | 12 | n/a | 38.88M | $68.43M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 20.73M | n/a | $29.23M | 0.0% | n/c | 1 | SEC ↗ ×10 |
| 2 | ARK Investment Management ✦ | 19.21M | -7.0% | $27.08M | 0.2% | ▼ Trim | 5 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 10.72M | n/a | $15.12M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 4 | Geode Capital Management ✦ (passive) | 4.35M | -4.2% | $6.13M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 5 | State Street Global Advisors ✦ (passive) | 3.83M | +0.8% | $5.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | D. E. Shaw & Co. ✦ | 3.75M | -1.0% | $5.29M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 7 | Millennium Management ✦ | 2.95M | -8.4% | $4.16M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 8 | AQR Capital Management ✦ | 2.20M | +54.1% | $3.10M | 0.0% | ▲ Add | 5 | SEC ↗ ×5 |
| 9 | PRIMECAP Management ✦ | 1.32M | -13.4% | $1.85M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 1.03M | -23.8% | $1.45M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 11 | Two Sigma Investments ✦ | 980.90K | -1.2% | $1.38M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | Renaissance Technologies ✦ | 765.50K | -44.1% | $1.08M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 743.89K | n/a | $1.05M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 14 | T. Rowe Price ✦ | 273.41K | +1.6% | $386,000 | 0.0% | ▲ Add | 5 | 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
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 166 holders, 151.51M shares, $268.19M 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 30.00K sh · $89,529
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology