13F

Stock

Cayson Acquisition Corp

Ticker not mapped · held by 27 managers

Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025

Reported value

$53.5M

Holders

27

+0 new · −0 exited

Holders’ est. mark

$46.8K

Price effect on 2 books still in the name

Largest holder

$8.12M

BERKLEY W R CORP

Holder count by quarter

Q3 2025Q4 2025Q1 2026

Who holds it

Notable only
InvestorSharesValueEst. markChange
BERKLEY W R CORP763.3K$8.12M—Held
MIZUHO SECURITIES USA LLC704.7K$7.36M—Held
WOLVERINE ASSET MANAGEMENT LLC565.6K$6.02M—Held
RIVERNORTH CAPITAL MANAGEMENT, LLC450K$4.79M—Held
AQR Arbitrage LLC349.9K$3.73M—Held
Westchester Capital Management, LLC325K$3.46M—Held
BOOTHBAY FUND MANAGEMENT, LLC306.7K$3.26M—Held
Karpus Management, Inc.284.2K$3.02M—Held
Polar Asset Management Partners Inc.275K$2.93M$46.7KAdded$46.8K
HEIGHTS CAPITAL MANAGEMENT, INC150K$1.6M—Held
WHITEBOX ADVISORS LLC125K$1.33M—Held
GOLDMAN SACHS GROUP INC114.5K$1.22M—Held
Clear Street Group Inc.107.8K$1.15M—Held
D. E. Shaw & Co., Inc.100K$1.07M—Held
Magnetar Financial LLC75K$799.5K—Held
First Trust Capital Management L.P.75K$798K—Held
TWO SIGMA INVESTMENTS, LP66.6K$708.4K—Held
PNC Financial Services Group, Inc.60.3K$641.4K—Held
Dakota Wealth Management28.5K$303.2K—Held
Radcliffe Capital Management, L.P.26.9K$285.9K—Held
Warberg Asset Management LLC26.2K$278.8K—Held
TORONTO DOMINION BANK25.3K$269.2K—Held
Quarry LP14.5K$154.3K—Held
ROBINSON CAPITAL MANAGEMENT, LLC12.3K$130.6K—Held
Crossingbridge Advisors, LLC8.64K$92.1K—Held
LONGFELLOW INVESTMENT MANAGEMENT CO LLC470$5K—Held
MORGAN STANLEY45$479$8Added$61

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.