As of November 6, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Siddhi Acquisition Corp. The largest reported stake is Magnetar Financial LLC's, at 6.26%. 9 filings are on record since July 31, 2025 (Schedule 13G, August 8, 2025).
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Key facts
- · Reporting person: Healthcare of Ontario Pension Plan Trust Fund · Sole voting: 775,000 · Shared voting: 0 · Sole dispositive: 775,000 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-13
- · Reporting person: Bank of Montreal · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-12
- · Reporting person: Sculptor Capital LP · Sole voting: 0 · Shared voting: 1,246,984 · Sole dispositive: 0 · Shared dispositive: 1,246,984 · SCHEDULE 13G/A, 2025-11-14
- · Reporting person: Aristeia Capital, L.L.C. · Sole voting: 1,650,000 · Shared voting: 0 · Sole dispositive: 1,650,000 · Shared dispositive: 0 · SCHEDULE 13G, 2025-08-14
- · Holder: Sculptor Capital LP · Percent: 5.37% · SCHEDULE 13G/A
Siddhi Acquisition Corp has 9 Schedule 13D or 13G filings on record since 2025-07-31. 3 holders' latest filing reports 5% or more of class a ordinary shares, $0.0001 par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Magnetar Financial LLC | 6.26% | 1,750,000 | SCHEDULE 13G, 2025-08-08 | 2025-06-30 |
| First Trust Capital Management L.P. | 6.1% | 1,703,109 | SCHEDULE 13G, 2025-08-14 | 2025-06-30 |
| Aristeia Capital, L.L.C. | 5.91% | 1,650,000 | SCHEDULE 13G, 2025-08-14 | 2025-06-30 |
| Tenor Capital Management Company, L.P. | 4.9% | 1,374,599 | SCHEDULE 13G/A, 2025-08-13 | 2025-06-30 |
| Sculptor Capital LP | 4.46% | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| Healthcare of Ontario Pension Plan Trust Fund | 2.8% | 775,000 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Bank of Montreal | 0% | 0 | SCHEDULE 13G/A, 2026-02-12 | 2025-12-31 |
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More on Siddhi Acquisition Corp and the records around it.
Companies that share a holder
- Healthcare of Ontario Pension Plan Trust Fund also filed stake reports on 27 other companies: Cambridge Acquisition Corp. (Aug 2026), General Purpose Acquisition Corp. (May 2026), Artius II Acquisition Inc. (Feb 2026)
- 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)
- 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)
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What the Full Report on Siddhi Acquisition Corp covers
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Aristeia Capital, L.L.C. | 1,650,000 | 0 | 1,650,000 | 0 | SCHEDULE 13G, 2025-08-14 |
| Sculptor Capital LP | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Capital II LP | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Capital Holding Corp | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Capital Holding II LLC | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Capital Management, Inc. | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Master Fund, Ltd. | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Sculptor Special Funding, LP | 0 | 1,246,984 | 0 | 1,246,984 | SCHEDULE 13G/A, 2025-11-14 |
| Healthcare of Ontario Pension Plan Trust Fund | 775,000 | 0 | 775,000 | 0 | SCHEDULE 13G/A, 2026-02-13 |
| Bank of Montreal | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-12 |
| Bank Of Montreal Holding Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-12 |
| Bmo Nesbitt Burns Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-12 |
The latest filing names Siddhi Acquisition Corp, with its principal executive office as 100 Wall Street, 20th Floor, New York, NY 10005 (SCHEDULE 13G/A, 2026-02-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-31 | Bank of Montreal | 9.66% | SCHEDULE 13G |
| 2025-08-08 | Magnetar Financial LLC | 6.26% | SCHEDULE 13G |
| 2025-08-13 | Tenor Capital Management Company, L.P. | 4.9% | SCHEDULE 13G/A |
| 2025-08-14 | Sculptor Capital LP | 5.37% | SCHEDULE 13G/A |
| 2025-08-14 | Aristeia Capital, L.L.C. | 5.91% | SCHEDULE 13G |
| 2025-08-14 | First Trust Capital Management L.P. | 6.1% | SCHEDULE 13G |
| 2025-11-14 | Sculptor Capital LP | 4.46% | SCHEDULE 13G/A |
| 2026-02-12 | Bank of Montreal | 0% | SCHEDULE 13G/A |
| 2026-02-13 | Healthcare of Ontario Pension Plan Trust Fund | 2.8% | SCHEDULE 13G/A |
Questions about who owns Siddhi Acquisition Corp
Who owns Siddhi Acquisition Corp?
On this page, 3 holders' latest ownership filings report 5% or more of Siddhi Acquisition Corp: Magnetar Financial LLC (6.26%, Schedule 13G, filed 2025-08-08), First Trust Capital Management L.P. (6.1%, Schedule 13G, filed 2025-08-14) and Aristeia Capital, L.L.C. (5.91%, Schedule 13G, filed 2025-08-14).
Who are the largest shareholders of Siddhi Acquisition Corp?
By the share each holder's latest filing reports, the largest holders of Siddhi Acquisition Corp on this page are Magnetar Financial LLC (6.26%), First Trust Capital Management L.P. (6.1%) and Aristeia Capital, L.L.C. (5.91%).
When did Magnetar Financial LLC buy into Siddhi Acquisition Corp?
The filings give report dates, not purchase dates. The earliest filing from Magnetar Financial LLC on this page is the Schedule 13G, filed 2025-08-08, reporting 6.26%.
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%); 9 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 Siddhi Acquisition Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| April 1, 2025 | IPO filing, Form 424B4 | — | IPO filings | Source |
| March 25, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| March 7, 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.