As of November 10, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of Black Spade Acquisition Iii Co. The largest reported stake is Black Spade Sponsor LLC III's, at 22.3%. 7 filings are on record since January 9, 2026 (Schedule 13G, August 25, 2026).
Who owns Black Spade Acquisition III Co?
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Key facts
- · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 1,108,999 · Sole dispositive: 0 · Shared dispositive: 1,108,999 · SCHEDULE 13G, 2026-11-09
- · Reporting person: Black Spade Sponsor LLC III · Sole voting: 5,120,000 · Shared voting: 0 · Sole dispositive: 5,120,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-25
- · Reporting person: RP Investment Advisors LP · Sole voting: 0 · Shared voting: 1,425,000 · Sole dispositive: 0 · Shared dispositive: 1,425,000 · SCHEDULE 13G/A, 2026-05-15
- · Reporting person: Aristeia Capital, L.L.C. · Sole voting: 1,100,000 · Shared voting: 0 · Sole dispositive: 1,100,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-05-14
- · Reporting person: Magnetar Financial LLC · Sole voting: 0 · Shared voting: 1,000,000 · Sole dispositive: 0 · Shared dispositive: 1,000,000 · SCHEDULE 13G, 2026-05-13
Black Spade Acquisition Iii Co has 7 Schedule 13D or 13G filings on record since 2026-01-09. 6 holders' latest filing reports 5% or more of class a ordinary shares, $0.0001 par value, included as part of the units. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Black Spade Sponsor LLC III | 22.3% | 5,120,000 | SCHEDULE 13G, 2026-08-25 | 2026-03-31 |
| RP Investment Advisors LP | 8.3% | 1,425,000 | SCHEDULE 13G/A, 2026-05-15 | 2026-02-04 |
| Tenor Capital Management Company, L.P. | 6.7% | 1,000,000 | SCHEDULE 13G, 2026-01-09 | 2026-01-06 |
| W. R. Berkley Corporation | 6.4% | 1,108,999 | SCHEDULE 13G, 2026-11-09 | 2026-09-30 |
| Aristeia Capital, L.L.C. | 6.38% | 1,100,000 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| Magnetar Financial LLC | 5.79% | 1,000,000 | SCHEDULE 13G, 2026-05-13 | 2026-03-31 |
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More on Black Spade Acquisition Iii Co and the records around it.
Black Spade Acquisition Iii Co elsewhere on the record
Companies that share a holder
- RP Investment Advisors LP also filed stake reports on 17 other companies: Yorkville International Capital Corp. (Sep 2026), Amanat Acquisition Corp. (Aug 2026), ProCap Acquisition Corp (Aug 2026)
- Tenor Capital Management Company, L.P. also filed stake reports on 41 other companies: Archimedes Tech SPAC Partners II Co. (Aug 2026), Armada Acquisition Corp. II (Aug 2026), Blue Acquisition Corp. (Aug 2026)
- Aristeia Capital, L.L.C. also filed stake reports on 54 other companies: Apogee Acquisition Corp (Aug 2026), ARC Group Acquisition I Corp (Aug 2026), ClearThink 1 Acquisition Corp. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Black Spade Sponsor LLC III | 5,120,000 | 0 | 5,120,000 | 0 | SCHEDULE 13G, 2026-08-25 |
| RP Investment Advisors LP | 0 | 1,425,000 | 0 | 1,425,000 | SCHEDULE 13G/A, 2026-05-15 |
| RP Select Opportunities Master Fund Ltd. | 0 | 538,165 | 0 | 538,165 | SCHEDULE 13G/A, 2026-05-15 |
| RP Debt Opportunities Fund Ltd. | 0 | 282,965 | 0 | 282,965 | SCHEDULE 13G/A, 2026-05-15 |
| RP Alternative Global Bond Fund | 0 | 553,615 | 0 | 553,615 | SCHEDULE 13G/A, 2026-05-15 |
| RP Alternative Credit Opportunities Fund | 0 | 50,255 | 0 | 50,255 | SCHEDULE 13G/A, 2026-05-15 |
| W. R. Berkley Corporation | 0 | 1,108,999 | 0 | 1,108,999 | SCHEDULE 13G, 2026-11-09 |
| Berkley Insurance Company | 0 | 1,108,999 | 0 | 1,108,999 | SCHEDULE 13G, 2026-11-09 |
| Aristeia Capital, L.L.C. | 1,100,000 | 0 | 1,100,000 | 0 | SCHEDULE 13G, 2026-05-14 |
| Magnetar Financial LLC | 0 | 1,000,000 | 0 | 1,000,000 | SCHEDULE 13G, 2026-05-13 |
| Magnetar Capital Partners LP | 0 | 1,000,000 | 0 | 1,000,000 | SCHEDULE 13G, 2026-05-13 |
| Supernova Management LLC | 0 | 1,000,000 | 0 | 1,000,000 | SCHEDULE 13G, 2026-05-13 |
| David J. Snyderman | 0 | 1,000,000 | 0 | 1,000,000 | SCHEDULE 13G, 2026-05-13 |
The latest filing identifies Black Spade Acquisition Iii Co by CUSIP G1154S103 and gives its principal executive office as Suite 2902, 29/F, The Centrium, 60 Wyndham Street, Central (SCHEDULE 13G, 2026-11-09).
What the percentages are based on
As of March 31, 2026, each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 5.79% of the total number of shares outstanding (based upon the information provided by the Issuer in the Form 10-K filed on March 6, 2026 there were approximately 17,250,000 Shares outstanding).Magnetar Financial LLC, SCHEDULE 13G, 2026-05-13
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-01-09 | Tenor Capital Management Company, L.P. | 6.7% | SCHEDULE 13G |
| 2026-02-11 | RP Investment Advisors LP | 5.2% | SCHEDULE 13G |
| 2026-05-13 | Magnetar Financial LLC | 5.79% | SCHEDULE 13G |
| 2026-05-14 | Aristeia Capital, L.L.C. | 6.38% | SCHEDULE 13G |
| 2026-05-15 | RP Investment Advisors LP | 8.3% | SCHEDULE 13G/A |
| 2026-08-25 | Black Spade Sponsor LLC III | 22.3% | SCHEDULE 13G |
| 2026-11-09 | W. R. Berkley Corporation | 6.4% | SCHEDULE 13G |
Questions about who owns Black Spade Acquisition Iii Co
Who owns Black Spade Acquisition Iii Co?
On this page, 6 holders' latest ownership filings report 5% or more of Black Spade Acquisition Iii Co: Black Spade Sponsor LLC III (22.3%, Schedule 13G, filed 2026-08-25), RP Investment Advisors LP (8.3%, Schedule 13G/A, filed 2026-05-15), Tenor Capital Management Company, L.P. (6.7%, Schedule 13G, filed 2026-01-09), W. R. Berkley Corporation (6.4%, Schedule 13G, filed 2026-11-09) and Aristeia Capital, L.L.C. (6.38%, Schedule 13G, filed 2026-05-14); 1 more is listed above.
Who are the largest shareholders of Black Spade Acquisition Iii Co?
By the share each holder's latest filing reports, the largest holders of Black Spade Acquisition Iii Co on this page are Black Spade Sponsor LLC III (22.3%), RP Investment Advisors LP (8.3%) and Tenor Capital Management Company, L.P. (6.7%).
When did Black Spade Sponsor LLC III buy into Black Spade Acquisition Iii Co?
The filings give report dates, not purchase dates. The earliest filing from Black Spade Sponsor LLC III on this page is the Schedule 13G, filed 2026-08-25, reporting 22.3%.
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 Black Spade Acquisition Iii Co
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| January 5, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 18, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 12, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 5, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| September 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.