As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of James River Group Holdings, Ltd. The largest reported stake is Zimmer Partners, LP's, at 10%. 11 filings are on record since August 14, 2025 (Schedule 13D, May 15, 2026).
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Key facts
- · Reporting person: Enstar Group Limited · Sole voting: 0 · Shared voting: 2,590,765 · Sole dispositive: 0 · Shared dispositive: 2,590,765 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: Donald Smith & Co., Inc. · Sole voting: 2,361,019 · Shared voting: 0 · Sole dispositive: 2,417,519 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-11
- · Holder: Zimmer Partners, LP · Percent: 10% · SCHEDULE 13D
- · Holder: Barclays PLC · Percent: 1.61% · SCHEDULE 13G/A
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
James River Group Holdings, Ltd. has 11 Schedule 13D or 13G filings on record since 2025-08-14. 5 holders' latest filing reports 5% or more of common shares, par value $0.0002. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Zimmer Partners, LP | 10% | 4,623,685 | SCHEDULE 13D, 2026-05-15 | 2026-05-14 |
| T. Rowe Price Investment Management, Inc. | 9.8% | 4,500,097 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Enstar Group Limited | 5.6% | 2,590,765 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| Continental General Insurance Co | 5.3% | 2,424,813 | SCHEDULE 13G, 2026-03-24 | 2026-03-17 |
| Donald Smith & Co., Inc. | 5.3% | 2,440,347 | SCHEDULE 13G, 2026-08-11 | 2026-06-30 |
| Barclays PLC | 1.61% | 740,342 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on James River Group Holdings, Ltd. and the records around it.
James River Group Holdings, Ltd. elsewhere on the record
- Leadership changes Sep 2026
- Who owns it
Companies that share a holder
- Enstar Group Limited also filed stake reports on 1 other company: Eagle Point Income Company, Inc. (Aug 2026)
- Zimmer Partners, LP also filed stake reports on 5 other companies: National Healthcare Properties, Inc. (Aug 2026), FrontView REIT Inc (Feb 2026), Hawaiian Electric Industries, Inc. (Aug 2025)
- CONTINENTAL GENERAL INSURANCE CO also filed stake reports on 9 other companies: Bleichroeder Acquisition Corp. II (Aug 2026), GEO GROUP INC (Aug 2026), Groupon, Inc. (Aug 2026)
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What the Full Report on James River Group Holdings, Ltd. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Enstar Group Limited | 0 | 2,590,765 | 0 | 2,590,765 | SCHEDULE 13G/A, 2026-08-13 |
| Elk Insurance Holdings, LLC | 0 | 2,590,765 | 0 | 2,590,765 | SCHEDULE 13G/A, 2026-08-13 |
| Jennifer Gordon | 0 | 2,590,765 | 0 | 2,590,765 | SCHEDULE 13G/A, 2026-08-13 |
| Anthony Michael Muscolino | 0 | 2,590,765 | 0 | 2,590,765 | SCHEDULE 13G/A, 2026-08-13 |
| Donald Smith & Co., Inc. | 2,361,019 | 0 | 2,417,519 | 0 | SCHEDULE 13G, 2026-08-11 |
| DSCO Value Fund, L.P. | 22,828 | 0 | 22,828 | 0 | SCHEDULE 13G, 2026-08-11 |
The latest filing names James River Group Holdings, Ltd., with its principal executive office as Clarendon House, 2 Church Street, Hamilton, Pembroke (SCHEDULE 13G/A, 2026-08-13).
What the percentages are based on
5.6% (based upon 46,236,856 shares of the Issuer's Common Stock issued and outstanding as of May 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on May 5, 2026).Enstar Group Limited, SCHEDULE 13G/A, 2026-08-13
Purpose of Transaction (Item 4)
Zimmer Partners, LP
The Reporting Persons originally acquired the position in the shares of Common Stock of the Issuer for the account of the Zimmer Accounts in the belief that the shares of Common Stock were undervalued and represented an attractive investment opportunity. The Reporting Persons have begun to discuss or may in the future discuss with management of the Issuer, members of the Issuer's Board of Directors (the "Board") and other stockholders of the Issuer, among other things, strategic changes with respect to the Issuer or its subsidiaries, elimination of the common dividend and suspension of the preferred dividend, use of excess cash to pay down debt, a potential private placement of equity securities, other changes to the Issuer's operations and reduction of expenses, offerings of securities and proposing or responding to a potential strategic transaction. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and may from time to time and at any time in the future depending on various factors, including, without limitation, the Issuer's financial position and strategic direction, actions taken by the Issuer's Board or management, price levels of the shares of Common Stock, other investment opportunities available to the Reporting Persons, conditions in the securities market and general economic and industry conditions, take such actions with respect to their investments in the Issuer as they deem appropriate, including changing its intent …The first part of Item 4 of the SCHEDULE 13D filed 2026-05-15; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-14 | Zimmer Partners, LP | 6.5% | SCHEDULE 13G |
| 2025-08-14 | T. Rowe Price Investment Management, Inc. | 9.8% | SCHEDULE 13G/A |
| 2025-11-12 | Zimmer Partners, LP | 10% | SCHEDULE 13G/A |
| 2025-11-13 | Enstar Group Limited | 5.6% | SCHEDULE 13G/A |
| 2026-02-11 | Barclays PLC | 5.03% | SCHEDULE 13G |
| 2026-03-24 | Continental General Insurance Co | 5.3% | SCHEDULE 13G |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-14 | Barclays PLC | 1.61% | SCHEDULE 13G/A |
| 2026-05-15 | Zimmer Partners, LP | 10% | SCHEDULE 13D |
| 2026-08-11 | Donald Smith & Co., Inc. | 5.3% | SCHEDULE 13G |
| 2026-08-13 | Enstar Group Limited | 5.6% | SCHEDULE 13G/A |
Questions about who owns James River Group Holdings, Ltd.
Who owns James River Group Holdings, Ltd.?
On this page, 5 holders' latest ownership filings report 5% or more of James River Group Holdings, Ltd.: Zimmer Partners, LP (10%, Schedule 13D, filed 2026-05-15), T. Rowe Price Investment Management, Inc. (9.8%, Schedule 13G/A, filed 2025-08-14), Enstar Group Limited (5.6%, Schedule 13G/A, filed 2026-08-13), Continental General Insurance Co (5.3%, Schedule 13G, filed 2026-03-24) and Donald Smith & Co., Inc. (5.3%, Schedule 13G, filed 2026-08-11).
Who are the largest shareholders of James River Group Holdings, Ltd.?
By the share each holder's latest filing reports, the largest holders of James River Group Holdings, Ltd. on this page are Zimmer Partners, LP (10%), T. Rowe Price Investment Management, Inc. (9.8%) and Enstar Group Limited (5.6%).
When did Zimmer Partners, LP buy into James River Group Holdings, Ltd.?
The filings give report dates, not purchase dates. The earliest filing from Zimmer Partners, LP on this page is the Schedule 13G, filed 2025-08-14, reporting 6.5%; its latest, Schedule 13D filed 2026-05-15, reports 10%.
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%); 11 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 James River Group Holdings, Ltd.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| September 3, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| August 21, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| June 8, 2026 | Leadership change: Rajiv Basu appointed, Director | — | Leadership changes | Source |
| April 14, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | 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.