ACCELERANT HOLDINGS ARX
CL A · Common Stock · CUSIP G00894108
- SectorFinancials
- IndustryInsurance Agents, Brokers & Service
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $11.80. Options: 3 managers hold calls ($866.1k notional), 2 hold puts ($148.8k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2025 | 88 |
| Q4 2025 | 98 |
| Q1 2026 | 107 |
| Q2 2026 | 116 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2025 | 59 | 52 |
| Q1 2026 | 63 | 45 |
| Q2 2026 | 78 | 53 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $358.8k | $1.8m | 5.00 |
| Q4 2025 | $958.1k | $4.9k | 0.01 |
| Q1 2026 | $726.8k | $0 | 0.00 |
| Q2 2026 | $866.1k | $148.8k | 0.17 |
Biggest buyers
| FMR LLC | Added | +3.8m |
| BlackRock, Inc. | Added | +3.3m |
| GOLDMAN SACHS GROUP INC | Added | +2.0m |
| Azora Capital LP | Added | +1.1m |
| Owls Nest Partners IA, LLC | Added | +1.0m |
| STATE STREET CORP | Added | +863.5k |
| GEODE CAPITAL MANAGEMENT, LLC | New | +809.6k |
| AMERICAN CENTURY COMPANIES INC | Added | +689.1k |
| CITADEL ADVISORS LLC | Added | +603.8k |
| Walleye Capital LLC | New | +541.3k |
Biggest sellers
| ALLIANCEBERNSTEIN L.P. | Reduced | -1.4m |
| BAMCO INC /NY/ | Sold out | -1.2m |
| MARSHALL WACE, LLP | Reduced | -1.2m |
| ArrowMark Colorado Holdings LLC | Reduced | -1.1m |
| T. Rowe Price Investment Management, Inc. | Sold out | -975.9k |
| Qube Research & Technologies Ltd | Reduced | -691.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -639.0k |
| Capital World Investors | Reduced | -526.1k |
| Militia Capital Management LLC | Reduced | -370.0k |
| Woodline Partners LP | Reduced | -309.6k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $583.7k49.8k shares |
| PEAK6 LLC | New | $178.1k15.2k shares |
| GROUP ONE TRADING LLC | Reduced | $104.3k8.9k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $134.8k11.5k shares |
| GROUP ONE TRADING LLC | New | $14.1k1.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| ACP Accelerant Holdings, L.P. 13G · exempt (held before listing) new · filed 2025-11-14 | 44.2% |
| RADKE JEFFREY L 13G · exempt (held before listing) new · filed 2025-11-14 | 29.9% |
| Lee-Smith Christopher 13G · exempt (held before listing) new · filed 2025-11-14 | 17.4% |
| ONeill Francis James 13G · exempt (held before listing) new · filed 2025-11-14 | 7.0% |
| GLAZER CAPITAL, LLC 13G · passive investor new · filed 2026-09-30 | 5.0% |
Fell to 5% or below in the last year: Capital World Investors (4.4%, 2026-05-14)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 1 | $10.5k | 1 | $243.5m | — |
| Q4 2025 | 6 | $1.9m | 0 | — | — |
| Q1 2026 | 0 | — | 1 | $638.5k | $638.5k |
| Q2 2026 | 0 | — | 3 | $6.4m | $6.4m |
| Q3 2026 | 0 | — | 5 | $14.5m | $14.5m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-21 | Meriwether Karen Sue Director | Sold | $10.6k542 shares |
| 2026-08-13 | Hasley Nancy Director | Sold plan | $400.8k20.5k shares |
| 2026-08-11 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.1m89.2k shares |
| 2026-08-10 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $967.2k80.0k shares |
| 2026-08-10 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $767.8k63.6k shares |
| 2026-08-03 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $964.8k80.0k shares |
| 2026-07-28 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.5m104.6k shares |
| 2026-07-27 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.6m110.5k shares |
| 2026-07-27 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.4m95.2k shares |
| 2026-07-27 | Sternberg Matthew David COO, Risk Exchange | Sold plan | $257.2k17.6k shares |
| 2026-07-20 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.1m80.0k shares |
| 2026-07-17 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $211.3k14.8k shares |
| 2026-07-15 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.1m82.8k shares |
| 2026-07-14 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.1m83.1k shares |
| 2026-07-13 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.1m80.0k shares |
| 2026-07-06 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.1m80.0k shares |
| 2026-06-29 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.0m80.0k shares |
| 2026-06-26 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $968.7k73.5k shares |
| 2026-06-25 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $959.9k73.5k shares |
| 2026-06-23 | RADKE JEFFREY L Co-Founder, CEO, director · By LLC | Sold plan | $1.0m80.0k shares |
| 2026-06-23 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $1.0m76.5k shares |
| 2026-06-23 | Hasley Nancy Director | Sold plan | $458.9k35.0k shares |
| 2026-06-22 | ONeill Francis James Co-Founder, Chief U/W Officer · By Famed Ventures Limited | Sold plan | $931.8k70.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| SECURITY BENEFIT LIFE INSURANCE CO /KS/ 37.88% of their portfolio | 5.9m $68.8m | Unchanged |
| FMR LLC 0.00% of their portfolio | 5.6m $66.0m | Added +3.8m |
| Capital World Investors 0.01% of their portfolio | 4.6m $54.2m | Reduced -526.1k |
| Keenan Capital, LLC 9.25% of their portfolio | 4.0m $46.8m | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 3.9m $45.4m | Added +689.1k |
| GILDER GAGNON HOWE & CO LLC 0.45% of their portfolio | 3.7m $43.7m | Reduced -11.3k |
| BlackRock, Inc. 0.00% of their portfolio | 3.5m $41.0m | Added +3.3m |
| BARINGS LLC 0.67% of their portfolio | 3.1m $37.6m | Unchanged |
| Azora Capital LP 1.51% of their portfolio | 3.0m $35.7m | Added +1.1m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 2.4m $28.3m | Added +304.8k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 2.2m $27.5m | Added +156.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 2.0m $23.6m | Added +2.0m |
| Cresset Asset Management, LLC 0.08% of their portfolio | 1.8m $21.6m | Unchanged |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 1.7m $20.5m | Added +603.8k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.7m $19.4m | Reduced -281.7k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 1.4m $19.3m | Reduced -1.4m |
| Owls Nest Partners IA, LLC 4.76% of their portfolio | 1.3m $14.7m | Added +1.0m |
| MARSHALL WACE, LLP 0.01% of their portfolio | 1.1m $13.0m | Reduced -1.2m |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 952.1k $11.2m | Added +91.4k |
| STATE STREET CORP 0.00% of their portfolio | 900.8k $10.6m | Added +863.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 809.6k $9.5m | New |
| G2 Investment Partners Management LLC 1.37% of their portfolio | 640.0k $7.5m | Added +267.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 603.9k $7.1m | Added +423.7k |
| UBS Group AG 0.00% of their portfolio | 554.4k $6.5m | Reduced -131.2k |
| Walleye Capital LLC 0.03% of their portfolio | 541.3k $6.3m | New |
| Lighthouse Investment Partners, LLC 0.18% of their portfolio | 488.2k $5.7m | Added +402.7k |
| ArrowMark Colorado Holdings LLC 0.23% of their portfolio | 477.2k $5.6m | Reduced -1.1m |
| PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio | 408.9k $4.8m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 372.8k $4.4m | Added +67.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 369.6k $4.3m | Added +353.2k |
| XTX Topco Ltd 0.05% of their portfolio | 322.4k $3.8m | Added +84.7k |
| Holocene Advisors, LP 0.01% of their portfolio | 300.0k $3.5m | New |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 296.1k $3.5m | Added +19.5k |
| MORGAN STANLEY 0.00% of their portfolio | 280.0k $3.3m | Reduced -7.2k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 239.3k $2.8m | Reduced -691.6k |
| CANNELL CAPITAL LLC 1.40% of their portfolio | 171.1k $2.0m | Added +14.9k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 170.7k $2.0m | Added +134.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 148.9k $1.7m | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.03% of their portfolio | 138.3k $1.6m | Added +59.6k |
| Nuveen, LLC 0.00% of their portfolio | 134.8k $1.6m | New |
| Swiss National Bank 0.00% of their portfolio | 117.1k $1.4m | Added +39.2k |
| Burkehill Global Management, LP 0.04% of their portfolio | 100.0k $1.2m | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.07% of their portfolio | 98.9k $1.2m | New |
| Engineers Gate Manager LP 0.01% of their portfolio | 98.4k $1.2m | Added +54.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 92.4k $1.1m | Added +44.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 85.9k $1.0m | Added +57.1k |
| Militia Capital Management LLC 0.17% of their portfolio | 80.0k $937.6k | Reduced -370.0k |
| TIGER GLOBAL MANAGEMENT LLC 0.00% of their portfolio | 75.0k $879.0k | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 69.9k $819.0k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 69.0k $808.9k | Reduced -639.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 65.7k $769.9k | Added +30.7k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 65.1k $763.5k | Reduced -8.8k |
| Woodline Partners LP 0.00% of their portfolio | 57.6k $674.5k | Reduced -309.6k |
| SummitTX Capital, L.P. 0.02% of their portfolio | 56.6k $663.2k | Reduced -6.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 52.8k $619.3k | Reduced -620 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 50.9k $596.0k | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 41.5k $486.0k | Added +14.6k |
| Squarepoint Ops LLC 0.00% of their portfolio | 40.4k $473.8k | Reduced -172.4k |
| Jackson Creek Investment Advisors LLC 0.16% of their portfolio | 40.2k $477.0k | New |
| Legal & General Group Plc 0.00% of their portfolio | 37.8k $443.3k | Added +18.7k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 36.3k $425.5k | New |
| Invesco Ltd. 0.00% of their portfolio | 33.7k $395.4k | New |
| CITIGROUP INC 0.00% of their portfolio | 33.6k $393.6k | Added +29.7k |
| FORMULA GROWTH LTD 0.13% of their portfolio | 31.0k $363.3k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 28.6k $335.1k | Added +18.4k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 28.0k $328.4k | New |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 25.3k $348.0k | Added +11.2k |
| NATIXIS ADVISORS, LLC 0.00% of their portfolio | 25.3k $296.0k | Added +9.8k |
| DIVERSIFIED TRUST CO 0.00% of their portfolio | 24.1k $282.3k | New |
| Jupiter Topco LLC 0.00% of their portfolio | 23.5k $275.5k | First filing |
| Yorktown Management & Research Co Inc 0.16% of their portfolio | 22.8k $267.2k | New |
| WINTON GROUP Ltd 0.01% of their portfolio | 22.0k $257.8k | Added +8.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 21.4k $250.8k | New |
| BARCLAYS PLC 0.00% of their portfolio | 20.6k $241.8k | Reduced -26.1k |
| Graham Capital Management, L.P. 0.01% of their portfolio | 20.0k $234.4k | Added +6.4k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 18.0k $211.3k | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 17.5k $205.0k | Reduced -107.6k |
| Quadrature Capital Ltd 0.00% of their portfolio | 16.3k $191.5k | Reduced -11.7k |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 16.1k $188.8k | Added +5.3k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 13.3k $155.9k | Reduced -19.0k |
| KLP KAPITALFORVALTNING AS 0.00% of their portfolio | 13.2k $154.7k | Added +4.7k |
| Entropy Technologies, LP 0.01% of their portfolio | 13.0k $151.8k | Reduced -5.0k |
| Virtu Financial LLC 0.00% of their portfolio | 12.7k $149.0k | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 12.6k $148.1k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 12.3k $144.1k | New |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 12.2k $143.5k | New |
| SG Americas Securities, LLC 0.00% of their portfolio | 12.1k $142.0k | New |
| Magnetar Financial LLC 0.00% of their portfolio | 11.9k $139.9k | New |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 11.6k $136.0k | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 11.5k $134.9k | New |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 11.4k $133.5k | New |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 11.1k $129.8k | New |
| State of Wyoming 0.01% of their portfolio | 10.9k $128.3k | Added +8.9k |
| Vanguard Investments Australia, Ltd. 0.00% of their portfolio | 10.7k $125.1k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 10.2k $120.0k | Added +2.5k |
| Pictet Asset Management Holding SA 0.00% of their portfolio | 10.2k $119.1k | New |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 10.1k $118.0k | New |
| Caitong International Asset Management Co., Ltd 0.01% of their portfolio | 6.9k $80.6k | Added +6.7k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 5.5k $65.0k | New |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 5.4k $63.4k | Reduced -746 |