| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Zimmer Financial Services Group LLC | 81% | $864,741,223 | 40,220,522 | Stuart J. Zimmer | 30 Jun 2025 |
As of 30 Sep 2025, 67 institutional investors reported holding 6,477,357 shares of Ategrity Specialty Insurance Co Holdings - Common Stock, par value $0.001 per share (ASIC). This represents 13% of the company’s total 49,532,663 outstanding shares.
The largest institutional shareholders of Ategrity Specialty Insurance Co Holdings - Common Stock, par value $0.001 per share (ASIC) together control 12% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BAMCO INC /NY/ | 1.4% | 679,406 | +5.8% | 0.04% | $13,431,857 |
| Nuveen, LLC | 1.3% | 643,236 | +11% | 0% | $12,716,775 |
| T. Rowe Price Investment Management, Inc. | 1.2% | 599,082 | -0.15% | 0.01% | $11,844,000 |
| AMERICAN CENTURY COMPANIES INC | 0.88% | 437,449 | -7.9% | 0% | $8,648,367 |
| VANGUARD GROUP INC | 0.88% | 435,526 | +336% | 0% | $8,610,349 |
| Driehaus Capital Management LLC | 0.77% | 381,830 | +1% | 0.05% | $7,548,779 |
| EMERALD ADVISERS, LLC | 0.75% | 369,316 | -7.7% | 0.23% | $7,301,377 |
| BlackRock, Inc. | 0.71% | 349,424 | 0% | $6,908,113 | |
| NEXT CENTURY GROWTH INVESTORS LLC | 0.46% | 228,476 | -0.73% | 0.33% | $4,516,970 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.37% | 182,390 | -36% | 0% | $3,607,000 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 0.35% | 174,019 | -27% | 0.18% | $3,440,356 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 0.3% | 150,000 | -40% | 0% | $2,965,500 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.3% | 148,393 | 0% | $2,934,519 | |
| CANNELL CAPITAL LLC | 0.29% | 142,325 | +1323% | 0.74% | $2,813,765 |
| STATE OF WISCONSIN INVESTMENT BOARD | 0.25% | 125,000 | 0% | 0.01% | $2,471,250 |
| Freestone Grove Partners LP | 0.24% | 119,133 | -20% | 0.02% | $2,355,259 |
| MARSHALL WACE, LLP | 0.22% | 106,595 | +162% | 0% | $2,107,382 |
| Interval Partners, LP | 0.21% | 102,077 | +25% | 0.04% | $2,018,062 |
| Ghisallo Capital Management LLC | 0.2% | 100,000 | 0% | 0.06% | $1,977,000 |
| TWO SIGMA INVESTMENTS, LP | 0.19% | 94,135 | 0% | $1,861,049 | |
| Jain Global LLC | 0.14% | 68,000 | -34% | 0.02% | $1,344,360 |
| Russell Investments Group, Ltd. | 0.13% | 65,966 | +4812% | 0% | $1,304,173 |
| Schonfeld Strategic Advisors LLC | 0.13% | 63,058 | +12% | 0.01% | $1,246,656 |
| Alyeska Investment Group, L.P. | 0.12% | 60,000 | 0% | 0% | $1,186,200 |
| MILLENNIUM MANAGEMENT LLC | 0.1% | 50,215 | -28% | 0% | $992,751 |