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Disclosery

ONCH 1RT ACQUISITION CORP.

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USD CL A ORD SHS (common), issuer CIK 2054272

58 managers (58 13F filers) reported a position in ONCH shares at 2026-06-30, 12,559,756 shares in all. 2 filers opened a position and 1 filer sold out during the quarter.

Managers
58
13F filers
58
New
2
Added
10
Reduced
9
Sold out
1
Shares held by filers
12,559,756

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Meteora Capital, LLC1,699,693$17.4M1.45%-5,32113F-HRTimeline
Linden Advisors LPin group Linden Advisors LP1,010,100$10.3M0.05%013F-HRTimelineGroup
Jain Global LLC891,221$9.13M0.11%013F-HRTimeline
Governors Lane LP750,000$7.69M0.77%013F-HRTimeline
J. Goldman & Co LP700,000$7.17M0.25%013F-HRTimeline
MMCAP International Inc. SPCin group MMCAP600,000$6.15M0.52%013F-HRTimelineGroup
Verition Fund Management LLC529,358$5.42M0.04%+184,12313F-HR/ATimeline
Polar Asset Management Partners Inc.500,000$5.12M0.09%new13F-HRTimeline
Radcliffe Capital Management, L.P.425,732$4.36M0.33%+40,29613F-HRTimeline
Saba Capital Management, L.P.in group Saba Capital Management, L.P.424,932$4.36M0.13%-100,00013F-HRTimelineGroup
First Trust Capital Management L.P.299,996$3.07M0.18%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC293,200$3.01M<0.01%+4013F-HRTimelineGroup
WHITEBOX ADVISORS LLC260,000$2.67M0.04%013F-HRTimeline
Context Capital Management, LLC250,000$2.56M0.05%013F-HRTimeline
TENOR CAPITAL MANAGEMENT Co., L.P.250,000$2.56M0.04%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP250,000$2.56M0.06%013F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…250,000$2.56M<0.01%013F-HRTimeline
HBK INVESTMENTS L P249,304$2.56M0.03%013F-HRTimeline
Mint Tower Capital Management B.V.200,000$2.05M0.24%013F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC163,000$1.67M0.04%+88,00013F-HRTimelineGroup
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC161,200$1.65M0.06%013F-HRTimelineGroup
Periscope Capital Inc.153,962$1.58M0.25%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP150,624$1.54M<0.01%013F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.145,412$1.49M<0.01%+106,38013F-HRTimelineGroup
Cable Car Capital, LP125,000$1.28M0.03%013F-HRTimeline
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC120,518$1.24M0.02%-33,73013F-HRTimelineGroup
Shaolin Capital Management LLC119,699$1.23M0.07%-38,95713F-HRTimeline
Schonfeld Strategic Advisors LLC110,107$1.13M0.01%+90,10713F-HRTimeline
DLD Asset Management, LP109,331$1.12M0.09%013F-HRTimeline
ARISTEIA CAPITAL, L.L.C.100,000$1.02M0.02%013F-HRTimeline
K2 PRINCIPAL FUND, L.P.100,000$1.02M0.09%013F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT100,000$1.02M0.01%013F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC100,000$1.02M0.01%013F-HRTimelineGroup
O'Connor Alternative Investments LLC100,000$1.02M0.07%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
RIVERNORTH CAPITAL MANAGEMENT, LLC88,032$905K0.04%013F-HRTimeline
BERKLEY W R CORP74,416$762K0.04%013F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC73,535$753K0.01%+40013F-HRTimelineGroup
Centiva Capital, LP60,000$614K0.02%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO53,152$545K<0.01%013F-HRTimelineGroup
Quarry LP49,959$512K0.08%013F-HRTimeline
RLH Capital LLC49,959$512K0.25%013F-HRTimeline
READYSTATE ASSET MANAGEMENT LP50,000$512K0.02%013F-HRTimeline
GRITSTONE ASSET MANAGEMENT LLC49,433$507K0.49%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…47,737$489K<0.01%+37,73713F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC41,070$421K0.01%-5,00013F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC37,228$376K0.01%-23,02513F-HR/ATimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.29,952$307K<0.01%+513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS27,168$278K<0.01%013F-HRTimelineGroup
Davidson Kempner Capital Management LP25,000$256K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…25,000$256K<0.01%013F-HRTimelineGroup
Alberta Investment Management Corp25,000$256K<0.01%013F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC18,480$189K0.01%-56,67713F-HRTimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK15,035$154K<0.01%-10,00113F-HRTimelineGroup
TIG Advisors, LLCin group TIG Advisors, LLC10,000$102K<0.01%013F-HRTimelineGroup
Bulldog Investors, LLP10,000$102K0.02%new13F-HRTimeline
PenderFund Capital Management Ltd.7,000$71.7K0.01%+2,00013F-HRTimeline
UBS Group AGin group UBS Group AG149$1.53K<0.01%013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY62$636<0.01%-1613F-HRTimelineGroup