Who owns Cayson Acquisition Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CAPN from SEC Form 13F filings across 17 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, 17 institutions disclosed 2.9M shares of Cayson Acquisition Corp worth $31.9M — about 83.7% of shares outstanding; the largest disclosed holder is BERKLEY W R CORP. Source: SEC Form 13F filings, parsed by EvidInvest.
17
13F holders
$31.9M
value, 2026 filers
83.7%
of shares outstanding (2.9M sh)
1
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 CAPN's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BERKLEY W R CORP | 497,282 | $5.5M | 0.3% | 14.4% | 0.0% |
| 2 | MIZUHO SECURITIES USA LLC | 475,900 | $5.1M | 0.1% | 13.8% | 0.0% |
| 3 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 450,000 | $5.0M | 0.2% | 13% | 0.0% |
| 4 | WOLVERINE ASSET MANAGEMENT LLC | 276,715 | $3.1M | 0.0% | 8% | +0.4% |
| 5 | Polar Asset Management Partners Inc. | 275,100 | $3.0M | 0.1% | 8% | 0.0% |
| 6 | Shaolin Capital Management LLC | 223,900 | $2.5M | 0.1% | 6.5% | 0.0% |
| 7 | AQR Arbitrage LLC | 184,373 | $2.0M | 0.0% | 5.3% | 0.0% |
| 8 | HEIGHTS CAPITAL MANAGEMENT, INC | 149,531 | $1.7M | 0.4% | 4.3% | -0.3% |
| 9 | Clear Street Group Inc. | 141,837 | $1.6M | 0.0% | 4.1% | 0.0% |
| 10 | GOLDMAN SACHS GROUP INC | 63,394 | $699,870 | 0.0% | 1.8% | 0.0% |
| 11 | RLH Capital LLC | 56,218 | $622,895 | 0.3% | 1.6% | -47.1% |
| 12 | TORONTO DOMINION BANKNEW | 49,900 | $550,397 | 0.0% | 1.4% | new |
| 13 | Harraden Circle Investments, LLC | 26,661 | $294,071 | 0.0% | 0.8% | 0.0% |
| 14 | Quarry LP | 14,500 | $160,660 | 0.0% | 0.4% | 0.0% |
| 15 | BNP PARIBAS FINANCIAL MARKETS | 9,203 | $101,601 | 0.0% | 0.3% | 0.0% |
| 16 | UBS Group AG | 370 | $4,085 | 0.0% | 0% | 0.0% |
| 17 | MORGAN STANLEY | 65 | $718 | 0.0% | 0% | -4.4% |
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.