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Ownership

13F as of Q2 2026 · 55.0M shares outstanding

Who owns Armada Acquisition Corp. II?

By type of holder

Institutions 48.4% Insiders 0.0% Everyone else 51.6%

Concentration Top 10 holders own 57.6%

Jack Michael Arrington 15.1% · Arrington XRP Capital Fund, LP 15.1%

Institutional ownership

48.4%

+0.5 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+260.4K

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 +774.9K
Rivernorth Capital Management, LLC NEW +502.2K

Biggest sellers in Q2 2026

Karpus Management, Inc. −305.2K
O'Connor Alternative Investments LLC −300.0K

Who is planning to sell?

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

Is your stake being diluted?

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

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years53% Under 1 year47%

Quarterly turnover

8.2%

of institutional shares changed hands

Top 10 managers, median time held

1 year

Super Investors

Investment managers reporting Armada Acquisition Corp. II on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AC Arrington Capital Management, LLC	5.8M	10.53%	Unchanged	Q4 '25	37.1%
Shares held by quarter Peak holding5.8M (Q4'25) Change over 8 quarters+5.8M Share of the company10.530% Arrington Capital Management, LLC's full portfolio →
MC Meteora Capital, LLC	2.0M	3.61%	−295.6K (−13.0%)	Q3 '25	1.7%
Shares held by quarter Peak holding3.0M (Q4'25) Change over 8 quarters+2.0M Share of the company3.610% Meteora Capital, LLC's full portfolio →

Arrington Capital Management, LLC

5.8M

% of company

10.53%

Change vs last qtr

Unchanged

Held since

Q4 '25

Meteora Capital, LLC

2.0M

% of company

3.61%

Change vs last qtr

−295.6K (−13.0%)

Held since

Q3 '25

27 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting Armada Acquisition Corp. II on Form N-PORT; together they hold 1.0% 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	$3.99M	382.7K	0.70%	0.24%	June 30, 2026
RO RiverNorth Opportunities Fund Inc. Rivernorth Opportunities Fund Inc.	$1.04M	100.0K	0.18%	0.32%	June 30, 2026

First Trust Merger Arbitrage Fund

Investment Managers Series Trust II

Position value

$3.99M

% of company

0.70%

% of the fund

0.24%

As of

June 30, 2026

RiverNorth Opportunities Fund Inc.

Rivernorth Opportunities Fund Inc.

Position value

$1.04M

% of company

0.18%

% of the fund

0.32%

As of

June 30, 2026

3 more funds behind a free account

See every fund holding Armada Acquisition Corp. II 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
JM Jack Michael Arrington 5%+ holder 13D · 26.2%	8.3M	15.05%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company15.050% Disclosed stake13D · 26.2% View the 13D/G filing →
AX Arrington XRP Capital Fund, LP 5%+ holder 13D · 26.2%	8.3M	15.05%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company15.050% Disclosed stake13D · 26.2% View the 13D/G filing →

Jack Michael Arrington

5%+ holder13D · 26.2%

8.3M

% of company

15.05%

Change vs last qtr

—

Held since

—

Arrington XRP Capital Fund, LP

5%+ holder13D · 26.2%

8.3M

% of company

15.05%

Change vs last qtr

—

Held since

—

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