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Ownership

13F as of Q2 2026 · 4.5M shares outstanding

Who owns Columbus Acquisition Corp/Cayman Islands?

By type of holder

Institutions 53.5% Insiders 0.0% Everyone else 46.6%

Concentration Top 10 holders own 126.2%

Fen Zhang 37.8% · Hercules Capital Management VII Corp 37.8%

Institutional ownership

53.5%

+12.0 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+538.5K

by institutions in Q2 2026

New / sold out

5 / 4

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Mizuho Securities USA LLC +399.3K
Gladstone Institutional Advisory LLC NEW +146.4K

Biggest sellers in Q2 2026

AQR Arbitrage LLC SOLD OUT −99.1K
Virtu Financial LLC SOLD OUT −66.6K

Who is planning to sell?

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

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Columbus Acquisition Corp/Cayman Islands.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years56% Under 1 year44%

Quarterly turnover

28.3%

of institutional shares changed hands

Top 10 managers, median time held

3 quarters

Super Investors

Investment managers reporting Columbus Acquisition Corp/Cayman Islands on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
MS Mizuho Securities USA LLC	800.2K	17.80%	+399.3K (+99.6%)	2025	0.1%
Shares held by quarter Peak holding800.2K (Q2'26) Change over 8 quarters+800.2K Share of the company17.800% Mizuho Securities USA LLC's full portfolio →
HC Harraden Circle Investments, LLC	557.8K	12.41%	Unchanged	Q4 '25	0.8%
Shares held by quarter Peak holding557.8K (Q4'25) Change over 8 quarters+557.8K Share of the company12.410% Harraden Circle Investments, LLC's full portfolio →

Mizuho Securities USA LLC

800.2K

% of company

17.80%

Change vs last qtr

+399.3K (+99.6%)

Held since

2025

Harraden Circle Investments, LLC

557.8K

% of company

12.41%

Change vs last qtr

Unchanged

Held since

Q4 '25

17 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting Columbus Acquisition Corp/Cayman Islands on Form N-PORT; together they hold 3.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
RO RiverNorth Opportunities Fund Inc. Rivernorth Opportunities Fund Inc.	$1.04M	100.0K	2.22%	0.30%	December 31, 2025
FT First Trust Alternative Opportunities Fund First Trust Alternative Opportunities Fund	$414K	40.0K	0.89%	0.01%	December 31, 2025

RiverNorth Opportunities Fund Inc.

Rivernorth Opportunities Fund Inc.

Position value

$1.04M

% of company

2.22%

% of the fund

0.30%

As of

December 31, 2025

First Trust Alternative Opportunities Fund

Position value

$414K

% of company

0.89%

% of the fund

0.01%

As of

December 31, 2025

1 more funds behind a free account

See every fund holding Columbus Acquisition Corp/Cayman Islands and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
FZ Fen Zhang 5%+ holder 13D · 21.4%	1.7M	37.79%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company37.790% Disclosed stake13D · 21.4% View the 13D/G filing →
HC Hercules Capital Management VII Corp 5%+ holder 13D · 21.4%	1.7M	37.79%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company37.790% Disclosed stake13D · 21.4% View the 13D/G filing →

Fen Zhang

5%+ holder13D · 21.4%

1.7M

% of company

37.79%

Change vs last qtr

—

Held since

—

Hercules Capital Management VII Corp

5%+ holder13D · 21.4%

1.7M

% of company

37.79%

Change vs last qtr

—

Held since

—

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