As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of RMG ML Sports Holdings. The largest reported stake is Adage Capital Management, L.P.'s, at 8.23%. 2 filings are on record since June 16, 2026 (Schedule 13G, August 12, 2026).
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RMG ML Sports Holdings has 2 Schedule 13D or 13G filings on record since 2026-06-16. 2 holders' latest filing reports 5% or more of class a ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Adage Capital Management, L.P. | 8.23% | 1,800,000 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
| Sculptor Capital LP | 6.4% | 1,400,000 | SCHEDULE 13G, 2026-06-16 | 2026-06-11 |
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More on RMG ML Sports Holdings and the records around it.
Companies that share a holder
- Sculptor Capital LP also filed stake reports on 40 other companies: Helix Acquisition Corp. III (Oct 2026), Live Oak Acquisition Corp. VI (Oct 2026), Amanat Acquisition Corp (Aug 2026)
- Adage Capital Management, L.P. also filed stake reports on 136 other companies: ACP Holdings Acquisition Corp. (Aug 2026), AmperCap Acquisition Company (Aug 2026), Aura Biosciences, Inc. (Aug 2026)
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The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Adage Capital Management, L.P. | 0 | 1,800,000 | 0 | 1,800,000 | SCHEDULE 13G, 2026-08-12 |
| Robert Atchinson | 0 | 1,800,000 | 0 | 1,800,000 | SCHEDULE 13G, 2026-08-12 |
| Phillip Gross | 0 | 1,800,000 | 0 | 1,800,000 | SCHEDULE 13G, 2026-08-12 |
| Sculptor Capital LP | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
| Sculptor Capital II LP | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
| Sculptor Capital Holding Corp | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
| Sculptor Capital Holding II LLC | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
| Sculptor Capital Management, Inc. | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
| Sculptor Master Fund, Ltd. | 0 | 1,400,000 | 0 | 1,400,000 | SCHEDULE 13G, 2026-06-16 |
The latest filing identifies RMG ML Sports Holdings by CUSIP G7610P104 and gives its principal executive office as 903 Tahoe Blvd, STE 802 PMB 45, Incline Village, NV 89451 (SCHEDULE 13G, 2026-08-12).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-06-16 | Sculptor Capital LP | 6.4% | SCHEDULE 13G |
| 2026-08-12 | Adage Capital Management, L.P. | 8.23% | SCHEDULE 13G |
Questions about who owns RMG ML Sports Holdings
Who owns RMG ML Sports Holdings?
On this page, 2 holders' latest ownership filings report 5% or more of RMG ML Sports Holdings: Adage Capital Management, L.P. (8.23%, Schedule 13G, filed 2026-08-12) and Sculptor Capital LP (6.4%, Schedule 13G, filed 2026-06-16).
Who are the largest shareholders of RMG ML Sports Holdings?
By the share each holder's latest filing reports, the largest holders of RMG ML Sports Holdings on this page are Adage Capital Management, L.P. (8.23%) and Sculptor Capital LP (6.4%).
When did Adage Capital Management, L.P. buy into RMG ML Sports Holdings?
The filings give report dates, not purchase dates. The earliest filing from Adage Capital Management, L.P. on this page is the Schedule 13G, filed 2026-08-12, reporting 8.23%.
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%); 2 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 RMG ML Sports Holdings
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| June 11, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| June 11, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| June 5, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| February 27, 2026 | 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.