$ONCH

$10.35 +$0.01 (0.1%) Close

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

Ownership

13F as of Q2 2026 · 3.8M shares outstanding

Who owns ONCH?

By type of holder

Institutions 100.0% Everyone else 0.0%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 10 holders own 5323.5%

Exor N.V. 4958.2% · Orbimed Advisors LLC 151.5%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+4.2M

by institutions in Q2 2026

New / sold out

4 / 3

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Exor N.V. +3.4M
Gagnon Securities LLC NEW +765.2K

Biggest sellers in Q2 2026

Orbimed Advisors LLC −530.7K
Saba Capital Management, L.P. −100.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for 1RT Acquisition Corp. in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for 1RT Acquisition Corp..

How patient are the owners?

Institutional shares by how long they've been held

5+ years3% 3–5 years89% 1–3 years0% Under 1 year8%

Quarterly turnover

1.4%

of institutional shares changed hands

Top 10 managers, median time held

3 quarters

Super Investors

Investment managers reporting ONCH on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
EN Exor N.V.	185.9M	4958.20%	+3.4M (+1.9%)	2023	92.6%
Shares held by quarter Peak holding185.9M (Q2'26) Change over 8 quarters+21.4M Share of the company4958.200% Exor N.V.'s full portfolio →
OA Orbimed Advisors LLC	5.7M	151.47%	−530.7K (−8.5%)	≤2021	0.6%
Shares held by quarter Peak holding12.0M (Q3'24) Change over 8 quarters−6.4M Share of the company151.470% Orbimed Advisors LLC's full portfolio →

Exor N.V.

185.9M

% of company

4958.20%

Change vs last qtr

+3.4M (+1.9%)

Held since

2023

Orbimed Advisors LLC

5.7M

% of company

151.47%

Change vs last qtr

−530.7K (−8.5%)

Held since

≤2021

26 more super investors behind a free account

See every manager holding 1RT Acquisition Corp., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ONCH on Form N-PORT; together they hold 10.5% 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	$2.52M	246.5K	6.57%	0.15%	June 30, 2026
FT First Trust Multi-Strategy Fund Investment Managers Series Trust II	$530K	51.7K	1.38%	0.04%	June 30, 2026

First Trust Merger Arbitrage Fund

Investment Managers Series Trust II

Position value

$2.52M

% of company

6.57%

% of the fund

0.15%

As of

June 30, 2026

First Trust Multi-Strategy Fund

Investment Managers Series Trust II

Position value

$530K

% of company

1.38%

% of the fund

0.04%

As of

June 30, 2026

5 more funds behind a free account

See every fund holding 1RT Acquisition Corp. and how much of the fund the position is.

Comments