As of November 8, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Eureka Acquisition Corp. The largest reported stake is RLH Capital LLC's, at 9.3%. 15 filings are on record since July 3, 2025 (Schedule 13G/A, July 7, 2025).
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Key facts
- · Reporting person: Mizuho Financial Group, Inc. · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-06
- · Reporting person: Feis Equities LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-14
- · Reporting person: Wolverine Asset Management, LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-09
- · Holder: Karpus Management, Inc. · Percent: 4.16% · SCHEDULE 13G/A
Eureka Acquisition Corp has 15 Schedule 13D or 13G filings on record since 2025-07-03. 2 holders' latest filing reports 5% or more of common shares. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| RLH Capital LLC | 9.3% | 295,400 | SCHEDULE 13G/A, 2025-07-07 | 2025-06-30 |
| AQR Capital Management, LLC | 5.65% | 179,141 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Karpus Management, Inc. | 4.16% | 200,925 | SCHEDULE 13G/A, 2026-04-07 | 2026-03-31 |
| Feis Equities LLC | 0% | 0 | SCHEDULE 13G/A, 2026-07-14 | 2026-07-07 |
| Mizuho Financial Group, Inc. | 0% | 0 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| W. R. Berkley Corporation | 0% | 0 | SCHEDULE 13G/A, 2026-08-06 | 2026-06-30 |
| 0% | 0 | SCHEDULE 13G/A, 2025-11-13 | 2025-09-30 | |
| First Trust Merger Arbitrage Fund | 0% | 0 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| Wolverine Asset Management, LLC | 0% | 0 | SCHEDULE 13G/A, 2026-07-09 | 2026-07-06 |
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Keep reading
More on Eureka Acquisition Corp and the records around it.
Eureka Acquisition Corp elsewhere on the record
Companies that share a holder
- Kerry Propper also filed stake reports on 5 other companies: Cayson Acquisition Corp. (May 2026), Future Vision II Acquisition Corp. (May 2026), Rising Dragon Acquisition Corp. (May 2026)
- Feis Equities LLC also filed stake reports on 44 other companies: SPACCircle Acquisition Corp. (Oct 2026), Aperture AC (Oct 2026), Pine Tree Acquisition Corp. (Oct 2026)
- First Trust Merger Arbitrage Fund also filed stake reports on 47 other companies: TCW SPECIALTY LENDING LLC (Sep 2026), Blue Foundry Bancorp (Aug 2026), Centurion 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 |
|---|---|---|---|---|---|
| Feis Equities LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-14 |
| Lawrence M. Feis | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-14 |
| Mizuho Financial Group, Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-13 |
| W. R. Berkley Corporation | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-06 |
| Berkley Insurance Company | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-06 |
| Wolverine Asset Management, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-09 |
| Wolverine Holdings, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-09 |
| Christopher L. Gust | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-09 |
| Robert R. Bellick | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-07-09 |
The latest filing identifies Eureka Acquisition Corp by CUSIP G32168109 and gives its principal executive office as 14 Prudential Tower, Singapore (SCHEDULE 13G/A, 2026-08-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-03 | Feis Equities LLC | 8.26% | SCHEDULE 13G |
| 2025-07-07 | Karpus Management, Inc. | 4.28% | SCHEDULE 13G/A |
| 2025-07-07 | RLH Capital LLC | 9.3% | SCHEDULE 13G/A |
| 2025-08-13 | Mizuho Financial Group, Inc. | 8.9% | SCHEDULE 13G/A |
| 2025-08-14 | AQR Capital Management, LLC | 5.65% | SCHEDULE 13G/A |
| 2025-11-10 | W. R. Berkley Corporation | 9% | SCHEDULE 13G |
| 2025-11-13 | Kerry Propper | 0% | SCHEDULE 13G/A |
| 2025-11-14 | Karpus Management, Inc. | 6.77% | SCHEDULE 13G |
| 2025-11-14 | First Trust Merger Arbitrage Fund | 0% | SCHEDULE 13G/A |
| 2026-02-02 | Feis Equities LLC | 8.43% | SCHEDULE 13G/A |
| 2026-04-07 | Karpus Management, Inc. | 4.16% | SCHEDULE 13G/A |
| 2026-07-09 | Wolverine Asset Management, LLC | 0% | SCHEDULE 13G/A |
| 2026-07-14 | Feis Equities LLC | 0% | SCHEDULE 13G/A |
| 2026-08-06 | W. R. Berkley Corporation | 0% | SCHEDULE 13G/A |
| 2026-08-13 | Mizuho Financial Group, Inc. | 0% | SCHEDULE 13G/A |
Questions about who owns Eureka Acquisition Corp
Who owns Eureka Acquisition Corp?
On this page, 2 holders' latest ownership filings report 5% or more of Eureka Acquisition Corp: RLH Capital LLC (9.3%, Schedule 13G/A, filed 2025-07-07) and AQR Capital Management, LLC (5.65%, Schedule 13G/A, filed 2025-08-14).
Who are the largest shareholders of Eureka Acquisition Corp?
By the share each holder's latest filing reports, the largest holders of Eureka Acquisition Corp on this page are RLH Capital LLC (9.3%) and AQR Capital Management, LLC (5.65%).
When did RLH Capital LLC buy into Eureka Acquisition Corp?
The filings give report dates, not purchase dates. The earliest filing from RLH Capital LLC on this page is the Schedule 13G/A, filed 2025-07-07, reporting 9.3%. That earliest filing is itself an amendment, which updates an earlier report.
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%); 15 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.
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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.
