Who owns Eureka Acquisition Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of EURK from SEC Form 13F filings across 14 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 14 institutions disclosed 1.5M shares of Eureka Acquisition Corp worth $16.9M — about 50.7% of shares outstanding; the largest disclosed holder is BERKLEY W R CORP. Source: SEC Form 13F filings, parsed by EvidInvest.
14
13F holders
$16.9M
value, 2026 filers
50.7%
of shares outstanding (1.5M sh)
0
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of EURK's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BERKLEY W R CORP | 315,488 | $3.6M | 0.2% | 10.9% | 0.0% |
| 2 | MIZUHO SECURITIES USA LLC | 300,455 | $3.3M | 0.1% | 10.4% | 0.0% |
| 3 | AQR Arbitrage LLC | 171,422 | $2.1M | 0.0% | 5.9% | +0.1% |
| 4 | Quarry LP | 155,400 | $1.8M | 0.1% | 5.4% | 0.0% |
| 5 | RLH Capital LLC | 155,400 | $1.8M | 0.9% | 5.4% | -47.4% |
| 6 | Cable Car Capital, LP | 100,000 | $1.2M | 0.0% | 3.4% | 0.0% |
| 7 | Crossingbridge Advisors, LLC | 73,768 | $842,431 | 0.1% | 2.5% | -36.8% |
| 8 | Yakira Capital Management, Inc. | 72,951 | $834,559 | 0.2% | 2.5% | 0.0% |
| 9 | Westchester Capital Management, LLC | 50,000 | $571,000 | 0.0% | 1.7% | 0.0% |
| 10 | Clear Street Group Inc. | 43,632 | $523,148 | 0.0% | 1.5% | -56.7% |
| 11 | GOLDMAN SACHS GROUP INC | 20,858 | $250,087 | 0.0% | 0.7% | 0.0% |
| 12 | Warberg Asset Management LLC | 10,057 | $115,052 | 0.0% | 0.3% | -21.3% |
| 13 | UBS Group AG | 85 | $1,019 | 0.0% | 0% | -4.5% |
| 14 | MORGAN STANLEY | 49 | $588 | 0.0% | 0% | -5.8% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.