Cayson Acquisition Corp Ordinary shares
Cayson Acquisition Corp Ordinary shares (CAPN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CAPN · as of Sep 30, 2025
Ownership Breakdown
30
Institutional Holders
▲ 3 vs Q2
$57.40M
Total Inst. Value
▼ $430,269 vs Q2
7.83M
Shares Outstanding
freeFloat 58.17%
5.50M
13F Shares Held
▼ 120,312 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CAPN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BERKLEY W R CORP blank checks | 763.3K | 9.75% | 9.75% | $7.98B | Nov 14, 2025 | — held |
MIZUHO SECURITIES USA LLC blank checks | 704.6K | 9.00% | 9.00% | $7.26B | Oct 22, 2025 | ▲ 101 |
WOLVERINE ASSET MANAGEMENT LLC blank checks | 568.5K | 7.26% | 7.26% | $5.95B | Oct 28, 2025 | ▼ 2.8K |
RIVERNORTH CAPITAL MANAGEMENT, LLC blank checks | 450.0K | 5.75% | 5.75% | $4.71B | Nov 14, 2025 | — held |
AQR ARBITRAGE LLC blank checks | 349.9K | 4.47% | 4.47% | $3.66B | Nov 14, 2025 | ▼ 8.0K |
WESTCHESTER CAPITAL MANAGEMENT, LLC blank checks | 325.0K | 4.15% | 4.15% | $3.40B | Nov 14, 2025 | — held |
BOOTHBAY FUND MANAGEMENT, LLC blank checks | 306.7K | 3.92% | 3.92% | $3.22B | Nov 14, 2025 | — held |
ATW SPAC MANAGEMENT LLC blank checks | 306.7K | 3.92% | 3.92% | $3.21B | Nov 12, 2025 | — held |
KARPUS MANAGEMENT, INC. blank checks | 285.5K | 3.65% | 3.65% | $2.99B | Nov 14, 2025 | ▼ 7.0K |
POLAR ASSET MANAGEMENT PARTNERS INC. blank checks | 275.0K | 3.51% | 3.51% | $2.88B | Dec 1, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
4
Increased
+6.9K shares4
New Positions
first time holders4
Decreased
−131.0K shares1
Sold Out
fully exitedNet shares change (top 50)
124.1K
+6.9K / −131.0K
Net new holders
+3
4 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CAPN insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
2
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Zhang Dahe Chief Financial Officer | Oct 15, 2024 | D-Return | 112,500 | — | — | 750.0K | Form 4 ↗ |
Cao Yawei Chief Executive Officer | Oct 15, 2024 | D-Return | 112,500 | — | — | 769.8K | Form 4 ↗ |
ENGELSEN STEINAR J director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
DALAL RAJEN director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
COLLINSON STUART J director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
SHAH MAHENDRA director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
Kirnon Stephen director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
Harris William G director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
Glasheen James Walter director | May 8, 2017 | Award | 45,139 | $0.72 | $32.5K | 45.1K | Form 4 ↗ |
Vivo Ventures V, LLC 10 percent owner | Apr 7, 2017 | Award | 13,888 | $0.63 | $8.7K | 13.9K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Cayson Acquisition Corp Ordinary shares (CAPN) is primarily owned by institutional investors, who hold approximately 70.2% of total shares outstanding. Company insiders own approximately 41.83%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Cayson Acquisition Corp Ordinary shares is BERKLEY W R CORP, holding approximately 763,302 shares — equal to 9.75% of outstanding shares — as of September 30, 2025.
A total of 30 institutional investors currently hold CAPN stock, with a combined institutional value of approximately $57,402,856 as of the most recent 13F filing period.
Frequently asked questions
CAPN ownershipCayson Acquisition Corp Ordinary shares (CAPN) is primarily owned by institutional investors, who hold approximately 70.2% of shares. The largest shareholder is BERKLEY W R CORP with a 9.75% stake. Company insiders hold 41.83%. Data sourced from SEC Form 13F as of September 30, 2025.