$ONEN

$1.25 -$0.08 (6.02%) Close

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

Ownership

13F as of Q2 2026 · 108.3M shares outstanding

Who owns ONEN?

By type of holder

Institutions 17.6% Insiders 82.4% Everyone else 0.0%

Concentration Top 10 holders own 99.5%

Dowd Kevin Francis 27.9% · Taylor Richard David 27.9%

Institutional ownership

17.6%

+0.3 pts vs last qtr

Institutional holders

+2 vs last qtr

Net shares bought

+289.5K

by institutions in Q2 2026

New / sold out

7 / 5

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Mizuho Securities USA LLC +421.8K
Berkley W R Corp +372.8K

Biggest sellers in Q2 2026

Aventail Capital Group, LP SOLD OUT −1.5M
Toronto Dominion Bank −87.5K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for ONE Nuclear Energy Inc. in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for ONE Nuclear Energy Inc..

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years60% Under 1 year40%

Quarterly turnover

9.9%

of institutional shares changed hands

Top 10 managers, median time held

1.3 years

Super Investors

Investment managers reporting ONEN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
HC Highbridge Capital Management LLC	1.7M	1.56%	+28.6K (+1.7%)	Q4 '25	0.4%
Shares held by quarter Peak holding1.7M (Q2'26) Change over 8 quarters+1.7M Share of the company1.560% Highbridge Capital Management LLC's full portfolio →
TC TENOR CAPITAL MANAGEMENT Co., L.P.	1.5M	1.39%	Unchanged	2025	0.2%
Shares held by quarter Peak holding1.5M (Q1'25) Change over 8 quarters+1.5M Share of the company1.390% TENOR CAPITAL MANAGEMENT Co., L.P.'s full portfolio →

Highbridge Capital Management LLC

1.7M

% of company

1.56%

Change vs last qtr

+28.6K (+1.7%)

Held since

Q4 '25

TENOR CAPITAL MANAGEMENT Co., L.P.

1.5M

% of company

1.39%

Change vs last qtr

Unchanged

Held since

2025

28 more super investors behind a free account

See every manager holding ONE Nuclear Energy Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ONEN on Form N-PORT; together they hold 0.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
RS Riverpark Short Term High Yield Fund RiverPark Funds Trust	$4.97M	475.3K	0.44%	1.01%	June 30, 2026
RO RiverNorth Opportunities Fund Inc. Rivernorth Opportunities Fund Inc.	$1.05M	100.0K	0.09%	0.32%	June 30, 2026

Riverpark Short Term High Yield Fund

RiverPark Funds Trust

Position value

$4.97M

% of company

0.44%

% of the fund

1.01%

As of

June 30, 2026

RiverNorth Opportunities Fund Inc.

Rivernorth Opportunities Fund Inc.

Position value

$1.05M

% of company

0.09%

% of the fund

0.32%

As of

June 30, 2026

2 more funds behind a free account

See every fund holding ONE Nuclear Energy Inc. 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
DK Dowd Kevin Francis Insider	30.2M	27.93%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company27.930% Dowd Kevin Francis's insider activity →
TR Taylor Richard David Insider	30.2M	27.93%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company27.930% Taylor Richard David's insider activity →

Dowd Kevin Francis

Insider

30.2M

% of company

27.93%

Change vs last qtr

—

Held since

—

Taylor Richard David

Insider

30.2M

% of company

27.93%

Change vs last qtr

—

Held since

—

3 more holders behind a free account

See every insider and 5%+ holder of ONE Nuclear Energy Inc..

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