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

13F Institutional Holders and Ownership History for Q3 2025

Type / Class
Equity / Class A ordinary shares, par value $0.0001 per share
Symbol
ONCH on Nasdaq
Shares outstanding
17,198,135
Price per share
$10.23
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
8,617,697
Total reported value
$90,054,933
% of total 13F portfolios
0%
Share change
+8,580,077
Value change
+$89,661,804
Number of holders
36
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
Harraden Circle Investments, LLC 8.7% $15,677,006 1,500,192 Harraden Circle Investments, LLC 30 Sep 2025
J. Goldman & Co LP 6.2% $11,266,406 1,078,125 J. Goldman & Co LP 30 Sep 2025
Jain Global LLC 5.2% $9,345,466 894,303 Jain Global LLC 30 Sep 2025

As of 30 Sep 2025, 36 institutional investors reported holding 8,617,697 shares of 1RT Acquisition Corp. - Class A ordinary shares, par value $0.0001 per share (ONCH). This represents 50% of the company’s total 17,198,135 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 49% 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
Harraden Circle Investments, LLC 8.7% 1,500,192 3.1% $15,677,006
METEORA CAPITAL, LLC 8.4% 1,452,022 1.6% $15,173,630
J. Goldman & Co LP 5% 862,500 0.34% $9,013,125
Saba Capital Management, L.P. 4.5% 774,932 0.27% $8,098,039
Linden Advisors LP 3% 510,100 0.04% $5,330,545
Governors Lane LP 2.7% 458,555 0.66% $4,791,900
First Trust Capital Management L.P. 1.7% 299,996 0.2% $3,134,958
WHITEBOX ADVISORS LLC 1.5% 260,000 0.05% $2,717,000
Verition Fund Management LLC 1.5% 255,830 0.02% $2,673,424
ExodusPoint Capital Management, LP 1.5% 250,000 0.04% $2,612,500
Context Capital Management, LLC 1.5% 250,000 0.18% $2,612,500
TENOR CAPITAL MANAGEMENT Co., L.P. 1.5% 250,000 0.03% $2,612,500
HBK INVESTMENTS L P 1.4% 249,304 0.04% $2,605,227
TWO SIGMA INVESTMENTS, LP 0.88% 150,624 0% $1,574,021
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.58% 100,000 0.06% $1,045,000
PICTON MAHONEY ASSET MANAGEMENT 0.58% 100,000 0.01% $1,045,000
K2 PRINCIPAL FUND, L.P. 0.58% 100,000 0.15% $1,045,000
ARISTEIA CAPITAL, L.L.C. 0.58% 100,000 0.03% $1,045,000
Shaolin Capital Management LLC 0.46% 79,759 0.04% $833,482
Periscope Capital Inc. 0.46% 79,600 0.2% $831,820
AQR Arbitrage LLC 0.44% 75,932 0.02% $793,489
BERKLEY W R CORP 0.43% 74,416 0.05% $777,647
Radcliffe Capital Management, L.P. 0.36% 61,223 0.04% $639,780
JPMORGAN CHASE & CO 0.31% 53,152 0% $555,438
GRITSTONE ASSET MANAGEMENT LLC 0.29% 49,433 0.53% $516,575

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 Q3 8,617,697 $90,054,933 +$89,661,804 $10.45 36