PRA
ProAssurance Corporation · Financial Services · Insurance - Property & Casualty
Momentum inputs (comparable managers):
holder breadth +8.3% ·
share flow -14.7% ·
net new positions +7.7%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q1 2026 | 76 | -3 | 32.43M | $800.53M | +3 | −6 |
| Q4 2025 | 79 | -2 | 37.06M | $895.32M | — | −2 |
| Q3 2025 | 16 | -1 | 19.21M | $460.88M | +1 | −2 |
| Q2 2025 | 14 | -2 | 18.88M | $431.07M | — | −2 |
| Q1 2025 | 13 | +1 | 6.89M | $160.89M | +1 | — |
| Q4 2024 | 12 | 0 | 8.08M | $128.49M | — | — |
| Q3 2024 | 11 | +1 | 6.34M | $95.29M | +1 | — |
| Q2 2024 | 10 | — | 5.98M | $73.11M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 1.95M | -3.6% | $45.48M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.20M | +3.4% | $28.08M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.20M | +3.4% | $28.08M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Wellington Management ✦ | 786.77K | -73.7% | $18.37M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | Wellington Management ✦ | 786.77K | -73.7% | $18.37M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | Wellington Management ✦ | 786.77K | -73.7% | $18.37M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | Wellington Management ✦ | 786.77K | -73.7% | $18.37M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Renaissance Technologies ✦ | 729.70K | +16.8% | $17.04M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | Arrowstreet Capital ✦ | 701.07K | +1.5% | $16.37M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | Adage Capital Partners ✦ | 354.63K | New | $8.28M | 0.0% | New | 1 | SEC ↗ |
| 11 | Millennium Management ✦ | 306.54K | +181.6% | $7.16M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | Marshall Wace ✦ | 193.63K | +565.6% | $4.52M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | Marshall Wace ✦ | 193.63K | +565.6% | $4.52M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | D. E. Shaw & Co. ✦ | 182.54K | +97.5% | $4.26M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 15 | Citadel Advisors ✦ | 165.15K | +231.4% | $3.86M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | Citadel Advisors ✦ | 165.15K | +231.4% | $3.86M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 134.64K | +40.4% | $3.14M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 134.64K | +40.4% | $3.14M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 134.64K | +40.4% | $3.14M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 134.64K | +40.4% | $3.14M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 21 | Two Sigma Investments ✦ | 133.69K | -18.1% | $3.12M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 22 | T. Rowe Price ✦ | 51.44K | +4.6% | $1.20M | 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
| Adage Capital Partners | $8.28M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 219 holders, 51.25M shares, $1.22B 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.