$CAPN

$11.44 +$0.14 (1.24%) Close

$CAPN Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 5.3M shares outstanding

Who owns CAPN?

By type of holder

Institutions 60.9% Insiders 0.0% Everyone else 39.1%

Concentration Top 10 holders own 59.0%

Mizuho Securities USA LLC 18.0% · Berkley W R Corp 9.4%

Institutional ownership

60.9%

+6.2 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

+326.5K

by institutions in Q2 2026

New / sold out

1 / 1

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Mizuho Securities USA LLC +475.5K
Toronto Dominion Bank NEW +49.9K

Biggest sellers in Q2 2026

Heights Capital Management, Inc SOLD OUT −150.0K
RLH Capital LLC −50.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Cayson Acquisition Corp in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Cayson Acquisition Corp.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years84% Under 1 year16%

Quarterly turnover

12.6%

of institutional shares changed hands

Top 10 managers, median time held

1.5 years

Super Investors

Investment managers reporting CAPN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
MS Mizuho Securities USA LLC	951.4K	17.99%	+475.5K (+99.9%)	2025	0.1%
Shares held by quarter Peak holding951.4K (Q2'26) Change over 8 quarters+951.4K Share of the company17.990% Mizuho Securities USA LLC's full portfolio →
BW Berkley W R Corp	497.3K	9.40%	Unchanged	2024	0.3%
Shares held by quarter Peak holding763.3K (Q1'25) Change over 8 quarters+497.3K Share of the company9.400% Berkley W R Corp's full portfolio →

Mizuho Securities USA LLC

951.4K

% of company

17.99%

Change vs last qtr

+475.5K (+99.9%)

Held since

2025

Berkley W R Corp

497.3K

% of company

9.40%

Change vs last qtr

Unchanged

Held since

2024

15 more super investors behind a free account

See every manager holding Cayson Acquisition Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CAPN on Form N-PORT; together they hold 3.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
FT First Trust Merger Arbitrage Fund Investment Managers Series Trust II	$711K	66.7K	1.26%	0.05%	December 31, 2025
RO RiverNorth Opportunities Fund Inc. Rivernorth Opportunities Fund Inc.	$646K	58.5K	1.11%	0.20%	June 30, 2026

First Trust Merger Arbitrage Fund

Investment Managers Series Trust II

Position value

$711K

% of company

1.26%

% of the fund

0.05%

As of

December 31, 2025

RiverNorth Opportunities Fund Inc.

Rivernorth Opportunities Fund Inc.

Position value

$646K

% of company

1.11%

% of the fund

0.20%

As of

June 30, 2026

3 more funds behind a free account

See every fund holding Cayson Acquisition Corp and how much of the fund the position is.

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