ARX
Accelerant Holdings · Financial Services · Insurance - Property & Casualty
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Capital World Investors ✦ | 5.75M | New | $85.67M | 0.0% | New | 1 | SEC ↗ |
| 2 | JPMorgan Chase ✦ | 3.22M | n/a | $47.97M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 3 | BlackRock ✦ (passive) | 2.31M | New | $34.35M | 0.0% | New | 1 | SEC ↗ ×10 |
| 4 | The Vanguard Group ✦ (passive) | 2.25M | New | $33.48M | 0.0% | New | 1 | SEC ↗ ×2 |
| 5 | Citadel Advisors ✦ | 922.09K | New | $13.73M | 0.0% | New | 1 | SEC ↗ ×2 |
| 6 | Millennium Management ✦ | 872.08K | New | $12.99M | 0.0% | New | 1 | SEC ↗ |
| 7 | Fidelity (FMR) ✦ | 558.64K | New | $8.32M | 0.0% | New | 1 | SEC ↗ ×4 |
| 8 | Soros Fund Management ✦ | 225.00K | New | $3.35M | 0.1% | New | 1 | SEC ↗ |
| 9 | D. E. Shaw & Co. ✦ | 156.47K | New | $2.33M | 0.0% | New | 1 | SEC ↗ |
| 10 | Marshall Wace ✦ | 105.22K | New | $1.57M | 0.0% | New | 1 | SEC ↗ ×3 |
| 11 | Goldman Sachs Group ✦ | 94.35K | n/a | $1.40M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Morgan Stanley ✦ | 90.10K | n/a | $1.34M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 13 | Point72 Asset Management ✦ | 76.30K | New | $1.14M | 0.0% | New | 1 | SEC ↗ |
| 14 | Tiger Global Management ✦ | 75.00K | New | $1.12M | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Capital World Investors | $85.67M | 0.0% |
| BlackRock | $34.35M | 0.0% |
| The Vanguard Group | $33.48M | 0.0% |
| Citadel Advisors | $13.73M | 0.0% |
| Millennium Management | $12.99M | 0.0% |
| Fidelity (FMR) | $8.32M | 0.0% |
| Soros Fund Management | $3.35M | 0.1% |
| D. E. Shaw & Co. | $2.33M | 0.0% |
| Marshall Wace | $1.57M | 0.0% |
| Point72 Asset Management | $1.14M | 0.0% |
| Tiger Global Management | $1.12M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 106 holders, 53.55M shares, $714.86M 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)
Director · 542 sh · $10,631
Director · 20.49K sh · $400,839
Officer · 89.22K sh · $1.11M
Officer · 63.62K sh · $767,667
Officer, Director, 10% owner · 80.00K sh · $967,096
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology