CERS
Cerus Corporation · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -8.3% ·
share flow +5.6% ·
net new positions -9.1%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 78 | +4 | 100.97M | $293.72M | +7 | −3 |
| Q1 2026 | 76 | -1 | 93.85M | $170.85M | +2 | −3 |
| Q4 2025 | 77 | +2 | 97.51M | $200.87M | +2 | — |
| Q3 2025 | 17 | 0 | 78.06M | $124.11M | — | — |
| Q2 2025 | 14 | 0 | 72.85M | $102.72M | — | — |
| Q1 2025 | 11 | -1 | 42.94M | $59.69M | — | −1 |
| Q4 2024 | 12 | -1 | 40.64M | $62.59M | — | −1 |
| Q3 2024 | 12 | 0 | 39.10M | $68.03M | — | — |
| Q2 2024 | 12 | — | 38.88M | $68.43M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | ARK Investment Management ✦ | 20.66M | -0.8% | $28.71M | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 4.54M | +2.0% | $6.32M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | State Street Global Advisors ✦ (passive) | 3.80M | -0.2% | $5.28M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | D. E. Shaw & Co. ✦ | 3.79M | +10.6% | $5.27M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 5 | Millennium Management ✦ | 3.22M | +12.0% | $4.48M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | PRIMECAP Management ✦ | 1.52M | -1.6% | $2.11M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | AQR Capital Management ✦ | 1.43M | +291.6% | $1.99M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 8 | Renaissance Technologies ✦ | 1.37M | +229.5% | $1.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 1.35M | -21.9% | $1.88M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 10 | Two Sigma Investments ✦ | 992.56K | +66.8% | $1.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 269.17K | +14.9% | $375,000 | 0.0% | ▲ Add | 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
| Marshall Wace | $582,954 | was 0.0% |
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