1RT Acquisition Corp. - Class A Ordinary Shares, par value $0.0001 per share (ONCH) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2025 to Q4 2025

Type / Class
Equity / Class A Ordinary Shares, par value $0.0001 per share
Symbol
ONCH on Nasdaq
Shares outstanding
17,250,000
Price per share
$10.20
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
12,053,938
Total reported value
$122,950,228
% of total 13F portfolios
0%
Share change
+3,436,241
Value change
+$35,047,055
Number of holders
50
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of 1RT Acquisition Corp. - Class A Ordinary Shares, par value $0.0001 per share (ONCH) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
1RT Acquisition Sponsor LLC 20% 4,312,500 1RT Acquisition Sponsor LLC 01 Jul 2025
METEORA CAPITAL, LLC 8.9% $15,697,943 1,539,014 Meteora Capital, LLC 31 Dec 2025
Harraden Circle Investments, LLC 8.7% $15,677,006 1,500,192 Harraden Circle Investments, LLC 30 Sep 2025
Jain Global LLC 5.2% $9,345,466 894,303 Jain Global LLC 30 Sep 2025
J. Goldman & Co LP 5% -20% $8,797,500 -$2,199,375 862,500 -20% J. Goldman & Co LP 31 Dec 2025

As of 31 Dec 2025, 50 institutional investors reported holding 12,053,938 shares of 1RT Acquisition Corp. - Class A Ordinary Shares, par value $0.0001 per share (ONCH). This represents 70% of the company’s total 17,250,000 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of 1RT Acquisition Corp. - Class A Ordinary Shares, par value $0.0001 per share (ONCH) together control 63% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
METEORA CAPITAL, LLC 8.9% 1,539,014 +6% 1.3% $15,697,943
Harraden Circle Investments, LLC 8.7% 1,500,192 0% 2.8% $15,301,958
Jain Global LLC 5.2% 892,221 0.09% $9,100,654
J. Goldman & Co LP 5% 862,500 0% 0.34% $8,797,500
Saba Capital Management, L.P. 4.5% 774,932 0% 0.27% $7,904,306
MMCAP International Inc. SPC 3.5% 600,000 0.61% $6,120,000
Governors Lane LP 3% 522,663 +14% 0.49% $5,331,163
Linden Advisors LP 3% 510,100 0% 0.03% $5,203,020
First Trust Capital Management L.P. 1.7% 299,996 0% 0.19% $3,059,959
Verition Fund Management LLC 1.7% 292,969 +15% 0.02% $2,988,284
MILLENNIUM MANAGEMENT LLC 1.5% 261,952 0% $2,671,910
WHITEBOX ADVISORS LLC 1.5% 260,000 0% 0.05% $2,652,000
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 1.4% 250,000 0% $2,550,000
ExodusPoint Capital Management, LP 1.4% 250,000 0% 0.03% $2,550,000
MOORE CAPITAL MANAGEMENT, LP 1.4% 250,000 0.05% $2,550,000
Context Capital Management, LLC 1.4% 250,000 0% 0.07% $2,550,000
TENOR CAPITAL MANAGEMENT Co., L.P. 1.4% 250,000 0% 0.04% $2,550,000
HBK INVESTMENTS L P 1.4% 249,304 0% 0.03% $2,542,901
Mint Tower Capital Management B.V. 1.2% 200,000 0.26% $2,040,000
Shaolin Capital Management LLC 1.2% 200,000 +151% 0.08% $2,040,000
TWO SIGMA INVESTMENTS, LP 0.87% 150,624 0% 0% $1,536,365
Radcliffe Capital Management, L.P. 0.81% 139,292 +128% 0.08% $1,420,778
Cable Car Capital, LP 0.72% 125,000 0.08% $1,275,000
DLD Asset Management, LP 0.63% 109,331 0.12% $1,115,176
Magnetar Financial LLC 0.58% 100,000 0.01% $1,020,000

Institutional Holders of 1RT Acquisition Corp. - Class A Ordinary Shares, par value $0.0001 per share (ONCH) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 12,053,938 $122,950,228 +$35,047,055 $10.20 50
2025 Q3 8,617,697 $90,054,933 +$89,661,804 $10.45 36