As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Accelerant Holdings. The largest reported stake is ACP Insurance Management, LLC's, at 44.2%. 7 filings are on record since November 13, 2025 (Schedule 13G, November 14, 2025).
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Key facts
- · Reporting person: Glazer Capital, LLC · Sole voting: 0 · Shared voting: 5,969,101 · Sole dispositive: 0 · Shared dispositive: 5,969,101 · SCHEDULE 13G, 2026-09-30
- · Reporting person: Capital World Investors · Sole voting: 5,152,741 · Shared voting: 0 · Sole dispositive: 5,152,741 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-05-14
- · Reporting person: ACP Accelerant Holdings, L.P. · Sole voting: 0 · Shared voting: 85,976,902 · Sole dispositive: 0 · Shared dispositive: 85,976,902 · SCHEDULE 13G, 2025-11-14
- · Reporting person: ONeill Francis James · Sole voting: 8,079,736 · Shared voting: 0 · Sole dispositive: 8,079,736 · Shared dispositive: 0 · SCHEDULE 13G, 2025-11-14
- · Holder: Lee-Smith Christopher · Percent: 17.4% · SCHEDULE 13G
Accelerant Holdings has 7 Schedule 13D or 13G filings on record since 2025-11-13. 5 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| ACP Insurance Management, LLC | 44.2% | 90,916,741 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 |
| 29.9% | 36,750,813 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 | |
| 17.4% | 20,386,940 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 | |
| 7% | 8,079,736 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 | |
| Glazer Capital, LLC | 5% | 5,969,101 | SCHEDULE 13G, 2026-09-30 | 2026-09-23 |
| Capital World Investors | 4.4% | 5,152,741 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
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More on Accelerant Holdings and the records around it.
Accelerant Holdings elsewhere on the record
- IPO filing Jul 2025
- Who owns it
Companies that share a holder
- Glazer Capital, LLC also filed stake reports on 107 other companies: Bumble Inc (Oct 2026), Weave Communications Inc (Oct 2026), Utz Brands Inc (Oct 2026)
- Capital World Investors also filed stake reports on 125 other companies: New Fortress Energy Inc. (Oct 2026), Aura Minerals Inc. (Oct 2026), Skyworks Solutions, Inc. (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| ACP Accelerant Holdings, L.P. | 0 | 85,976,902 | 0 | 85,976,902 | SCHEDULE 13G, 2025-11-14 |
| ACP Insurance Management, LLC | 0 | 90,916,741 | 0 | 90,916,741 | SCHEDULE 13G, 2025-11-14 |
| Schwartz Keoni Andrew | 0 | 90,916,741 | 0 | 90,916,741 | SCHEDULE 13G, 2025-11-14 |
| ONeill Francis James | 8,079,736 | 0 | 8,079,736 | 0 | SCHEDULE 13G, 2025-11-14 |
| Glazer Capital, LLC | 0 | 5,969,101 | 0 | 5,969,101 | SCHEDULE 13G, 2026-09-30 |
| Paul J. Glazer | 0 | 5,969,101 | 0 | 5,969,101 | SCHEDULE 13G, 2026-09-30 |
| Capital World Investors | 5,152,741 | 0 | 5,152,741 | 0 | SCHEDULE 13G/A, 2026-05-14 |
The latest filing identifies Accelerant Holdings by CUSIP G00894108 and gives its principal executive office as Unit 106, Windward 3, Regatta Office Park, West Bay Road, Grand Cayman (SCHEDULE 13G, 2026-09-30).
What the percentages are based on
As of September 30, 2025, ACP Accelerant Holdings, L.P. may be deemed to beneficially own approximately 42.9% of the Class A common shares outstanding.ACP Insurance Management, LLC, SCHEDULE 13G, 2025-11-14
The Issuer has two classes of Common Stock: Class A common shares and Class B common shares. Each Class A common share is entitled to one vote per share, and each Class B common share is entitled to ten votes per share.ONeill Francis James, SCHEDULE 13G, 2025-11-14
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-13 | Capital World Investors | 5.1% | SCHEDULE 13G |
| 2025-11-14 | Lee-Smith Christopher | 17.4% | SCHEDULE 13G |
| 2025-11-14 | ONeill Francis James | 7% | SCHEDULE 13G |
| 2025-11-14 | Radke Jeffrey L | 29.9% | SCHEDULE 13G |
| 2025-11-14 | ACP Insurance Management, LLC | 44.2% | SCHEDULE 13G |
| 2026-05-14 | Capital World Investors | 4.4% | SCHEDULE 13G/A |
| 2026-09-30 | Glazer Capital, LLC | 5% | SCHEDULE 13G |
Questions about who owns Accelerant Holdings
Who owns Accelerant Holdings?
On this page, 5 holders' latest ownership filings report 5% or more of Accelerant Holdings: ACP Insurance Management, LLC (44.2%, Schedule 13G, filed 2025-11-14), Radke Jeffrey L (29.9%, Schedule 13G, filed 2025-11-14), Lee-Smith Christopher (17.4%, Schedule 13G, filed 2025-11-14), ONeill Francis James (7%, Schedule 13G, filed 2025-11-14) and Glazer Capital, LLC (5%, Schedule 13G, filed 2026-09-30).
Who are the largest shareholders of Accelerant Holdings?
By the share each holder's latest filing reports, the largest holders of Accelerant Holdings on this page are ACP Insurance Management, LLC (44.2%), Radke Jeffrey L (29.9%) and Lee-Smith Christopher (17.4%).
When did ACP Insurance Management, LLC buy into Accelerant Holdings?
The filings give report dates, not purchase dates. The earliest filing from ACP Insurance Management, LLC on this page is the Schedule 13G, filed 2025-11-14, reporting 44.2%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Accelerant Holdings
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 25, 2025 | IPO filing, Form 424B4 | $21 a share | IPO filings | Source |
| July 18, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| July 15, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| June 30, 2025 | IPO filing, Form S-1 | — | IPO filings | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.