Accelerant Holdings Class AARX
13F holders, Q1 2026 (March 31)107holders +9
27new positions
22sold out
6famous investors
$13.59avg. 13F price*
At the end of Q1 2026, 107 institutions reported holding Accelerant Holdings Class A (ARX) in their 13F filings, up 9 from Q4 2025. 27 opened new positions and 22 sold out. The largest holders were Security Benefit Life Insurance Co. ($78.4M), Capital World Investors ($68.8M) and Keenan Capital, LLC ($53.3M). 6 famous investors held it, including Ron Baron (0.0% of Baron Capital (BAMCO)'s portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Accelerant Holdings Class A
- CUSIP
- G00894108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $73.9M |
| Exits | 22 | $72.8M |
All 13F filers, Q4 2025 → Q1 2026: 12,290,065 shares bought and 8,175,264 shares sold, net +4,114,801 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 107 holders
| Security Benefit Life Insurance Co. | 41.57% | No change | 5,866,257 | $78.4M |
| Capital World Investors | 0.01% | Reduce -10.7% | 5,152,741 | $68.8M |
| Keenan Capital, LLC | 11.26% | Add +27.2% | 3,992,923 | $53.3M |
| Gilder Gagnon Howe & Co. LLC | 0.60% | Add +1.1% | 3,743,364 | $50.0M |
| Barings LLC | 0.77% | No change | 3,128,867 | $46.1M |
| Alliancebernstein L.P. | 0.01% | Reduce -1.6% | 2,800,188 | $45.8M |
| American Century Companies Inc. | 0.02% | Add +108.6% | 3,188,505 | $42.6M |
| Marshall Wace, LLP | 0.03% | Add +553.2% | 2,274,152 | $30.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,113,565 | $28.2M |
| JPMorgan Chase & Co. | 0.00% | Add +3.5% | 2,020,368 | $26.9M |
| Azora Capital LP | 1.74% | Reduce -18.8% | 1,980,211 | $26.5M |
| Vanguard Capital Management LLC | 0.00% | — | 1,938,938 | $25.9M |
| Cresset Asset Management, LLC | 0.11% | New | 1,839,620 | $24.6M |
| FMR LLC | 0.00% | Add +1.4% | 1,812,207 | $24.2M |
| ArrowMark Colorado Holdings LLC | 0.55% | Reduce -5.8% | 1,548,224 | $20.7M |
| Baron Capital (BAMCO) | 0.05% | Reduce -0.0% | 1,208,794 | $16.1M |
| Citadel Advisors | 0.01% | Add +59.9% | 1,144,206 | $15.3M |
| T. Rowe Price Investment Management, Inc. | 0.01% | Reduce -0.0% | 975,936 | $13.0M |
| Qube Research & Technologies Ltd | 0.02% | New | 930,942 | $12.4M |
| Jane Street Group, LLC | 0.01% | New | 860,697 | $11.5M |
| Susquehanna International Group, LLP | 0.01% | New | 708,046 | $9.5M |
| UBS Group AG | 0.00% | Add +28.0% | 685,647 | $9.2M |
| G2 Investment Partners Management LLC | 1.23% | Add +299.4% | 372,811 | $5.0M |
| Woodline Partners LP | 0.02% | Add +86.1% | 367,157 | $4.9M |
| BNP Paribas Financial Markets | 0.00% | Add +753.2% | 305,244 | $4.1M |
| Morgan Stanley | 0.00% | Add +165.3% | 287,175 | $3.8M |
| Renaissance Technologies | 0.01% | Add +280.5% | 276,600 | $3.7M |
| XTX Topco Ltd | 0.06% | Add +123.7% | 237,669 | $3.2M |
| Squarepoint Ops LLC | 0.01% | Add +6.9% | 212,791 | $2.8M |
| Owls Nest Partners IA, LLC | 0.98% | New | 209,707 | $2.8M |
| Seven Grand Managers, LLC | 0.18% | No change | 200,000 | $2.7M |
| Bank of America Corp. | 0.00% | Reduce -46.3% | 180,186 | $2.4M |
| Point72 Asset Management | 0.00% | New | 166,692 | $2.2M |
| BlackRock, Inc. | 0.00% | Reduce -33.1% | 165,564 | $2.2M |
| Cannell Capital LLC | 1.35% | New | 156,149 | $2.1M |
| Militia Capital Management LLC | 0.45% | — | 150,000 | $2.0M |
| Trexquant Investment LP | 0.01% | New | 149,119 | $2.0M |
| Robertson Opportunity Capital, LLC | 0.69% | New | 135,012 | $1.8M |
| Millennium Management | 0.00% | Reduce -31.1% | 125,068 | $1.7M |
| Schonfeld Strategic Advisors LLC | 0.01% | Add +98.9% | 113,795 | $1.5M |
| Burkehill Global Management, LP | 0.07% | No change | 100,000 | $1.3M |
| Jain Global LLC | 0.02% | Add +72.0% | 86,418 | $1.2M |
| Lighthouse Investment Partners, LLC | 0.04% | Reduce -57.0% | 85,406 | $1.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +39.2% | 82,680 | $1.1M |
| Boothbay Fund Management, LLC | 0.03% | Add +202.6% | 78,677 | $1.1M |
| Swiss National Bank | 0.00% | No change | 77,900 | $1.0M |
| Tiger Global Management | 0.00% | No change | 75,000 | $1.0M |
| Sei Investments Co. | 0.00% | Add +95.1% | 73,935 | $988K |
| SummitTX Capital, L.P. | 0.03% | Add +10.9% | 62,999 | $842K |
| Hudson Bay Capital Management LP | 0.01% | Add +71.4% | 55,276 | $738K |
| Brevan Howard Capital Management LP | 0.01% | New | 54,416 | $727K |
| State of Wisconsin Investment Board | 0.00% | Add +111.6% | 53,463 | $714K |
| Interval Partners, LP | 0.02% | Reduce -70.8% | 49,534 | $662K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 47,960 | $641K |
| Barclays PLC | 0.00% | Add +350.1% | 46,693 | $624K |
| Engineers Gate Manager LP | 0.01% | New | 44,016 | $588K |
| Jump Financial, LLC | 0.01% | New | 44,005 | $588K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -86.2% | 41,669 | $557K |
| Grandeur Peak Global Advisors, LLC | 0.12% | Reduce -97.6% | 39,573 | $529K |
| Jefferies Financial Group Inc. | 0.01% | Reduce -12.9% | 39,178 | $523K |
| Aquatic Capital Management LLC | 0.01% | New | 37,435 | $500K |
| State Street Corp. | 0.00% | Add +11.2% | 37,306 | $498K |
| Bank of New York Mellon Corp | 0.00% | New | 36,556 | $488K |
| California State Teachers Retirement System | 0.00% | No change | 34,972 | $467K |
| Catalyst Funds Management Pty Ltd | 0.08% | New | 34,900 | $466K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 32,300 | $432K |
| Wells Fargo & Company | 0.00% | New | 28,850 | $385K |
| Quadrature Capital Ltd | 0.00% | Add +69.0% | 28,000 | $374K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 26,856 | $359K |
| Landscape Capital Management, L.L.C. | 0.02% | Add +107.7% | 26,768 | $358K |
| Janus Henderson Group PLC | 0.00% | No change | 23,500 | $315K |
| Centiva Capital, LP | 0.01% | Reduce -84.0% | 20,443 | $273K |
| Legal & General Group Plc | 0.00% | Reduce -36.7% | 19,167 | $256K |
| Entropy Technologies, LP | 0.01% | New | 17,909 | $239K |
| Northern Trust Corp. | 0.00% | Add +10.8% | 16,419 | $219K |
| Natixis Advisors, LLC | 0.00% | Reduce -33.7% | 15,470 | $207K |
| Man Group plc | 0.00% | New | 14,144 | $189K |
| WINTON GROUP Ltd | 0.01% | New | 13,800 | $184K |
| Jones Financial Companies LLLP | 0.00% | Add +78333.3% | 14,118 | $184K |
| Graham Capital Management, L.P. | 0.01% | New | 13,622 | $182K |
| LMR Partners LLP | 0.00% | New | 11,672 | $156K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +12149.5% | 11,392 | $152K |
| Arizona State Retirement System | 0.00% | Reduce -0.2% | 10,838 | $145K |
| Vanguard Investments Australia, Ltd. | 0.00% | — | 10,677 | $143K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 10,229 | $137K |
| Arcus Capital Partners, LLC | 0.05% | New | 10,100 | $135K |
| Wesbanco Bank Inc. | 0.00% | No change | 10,000 | $134K |
| KLP Kapitalforvaltning As | 0.00% | No change | 8,500 | $114K |
| Royal Bank of Canada | 0.00% | Add +50.3% | 7,729 | $103K |
| Cwm, LLC | 0.00% | No change | 6,666 | $89K |
| PNC Financial Services Group, Inc. | 0.00% | Add +73.6% | 6,157 | $82K |
| Citigroup Inc. | 0.00% | Reduce -24.6% | 3,833 | $51K |
| Osaic Holdings, Inc. | 0.00% | Add +778.9% | 3,498 | $47K |
| State of Wyoming | 0.00% | New | 2,075 | $28K |
| Federation des caisses Desjardins du Quebec | 0.00% | New | 750 | $10K |
| First Horizon Corp. | 0.00% | Add +5.0% | 677 | $9K |
| Parallel Advisors, LLC | 0.00% | No change | 666 | $9K |
| Simplex Trading, LLC | 0.00% | Reduce -64.3% | 558 | $7K |
| Rachor Investment Advisory Services, LLC | 0.00% | Add +54.8% | 209 | $3K |
| SJS Investment Consulting Inc. | 0.00% | New | 164 | $2K |
"% of holder's portfolio" is ARX's weight in each manager's 13F, not the share of Accelerant Holdings Class A the manager owns.