OSG
Octave Specialty Group, Inc. · Financial Services · Insurance - Specialty
Momentum inputs (comparable managers):
holder breadth -7.7% ·
share flow +5.3% ·
net new positions -8.3%
— 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 | 63 | -1 | 16.53M | $103.10M | +6 | −7 |
| Q1 2026 | 66 | +3 | 17.21M | $80.13M | +9 | −7 |
| Q4 2025 | 64 | +2 | 20.99M | $163.30M | +3 | — |
| Q3 2025 | 15 | -1 | 13.08M | $109.08M | — | −2 |
| Q2 2025 | 14 | -1 | 14.28M | $101.37M | +1 | −2 |
| Q1 2025 | 12 | -1 | 5.14M | $45.01M | — | −1 |
| Q4 2024 | 13 | +1 | 4.89M | $61.81M | +1 | — |
| Q3 2024 | 11 | +1 | 3.82M | $42.83M | +1 | — |
| Q2 2024 | 10 | — | 3.41M | $43.67M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Citadel Advisors ✦ | 1.10M | +190.9% | $9.65M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | Citadel Advisors ✦ | 1.10M | +190.9% | $9.65M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.09M | +4.6% | $9.58M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.09M | +4.6% | $9.58M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | State Street Global Advisors ✦ (passive) | 1.03M | -42.5% | $9.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Millennium Management ✦ | 508.69K | +142.7% | $4.45M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | D. E. Shaw & Co. ✦ | 411.47K | -4.6% | $3.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 411.47K | -4.6% | $3.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | Norges Bank ✦ (passive) | 263.10K | 0.0% | $2.30M | 0.0% | Held | 4 | SEC ↗ |
| 10 | Marshall Wace ✦ | 205.41K | -23.1% | $1.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | Marshall Wace ✦ | 205.41K | -23.1% | $1.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | Renaissance Technologies ✦ | 171.50K | +38.1% | $1.50M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | Arrowstreet Capital ✦ | 145.90K | -12.7% | $1.28M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | Two Sigma Investments ✦ | 125.66K | -5.0% | $1.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 15 | T. Rowe Price ✦ | 48.87K | +4.3% | $428,000 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | Point72 Asset Management ✦ | 33.10K | +353.4% | $289,625 | 0.0% | ▲ Add | 2 | 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
| AQR Capital Management | $225,638 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 147 holders, 32.27M shares, $149.22M 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.