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1RT Acquisition Corp.

ONCHW
Exchange
Nasdaq
Industry
Blank Checks
SEC CIK
0002054272

No open-market purchases or sales by 1RT Acquisition Corp. insiders were filed in the last 90 days; 40 institutions reported holding it in 13F filings for Q2 2026, worth $1.50M in total; no superinvestor holds it.

Other share classesONCHONCHU

13F holders, Q2 2026

Institutional positions in 1RT Acquisition Corp. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
40
−2 vs. Q1 2026
Shares held
2.94M
+116.7K (+4.1%) vs. Q1 2026
Total value
$1.50M
+$292.5K (+24.2%) vs. Q1 2026
New holders
2
5 more added
Sold out
4
2 more reduced

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ONCHW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 40 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 0 institutionsQ1 2022: 0 institutionsQ2 2022: 0 institutionsQ3 2022: 0 institutionsQ4 2022: 0 institutionsQ1 2023: 0 institutionsQ2 2023: 0 institutionsQ3 2023: 0 institutionsQ4 2023: 0 institutionsQ1 2024: 0 institutionsQ2 2024: 0 institutionsQ3 2024: 0 institutionsQ4 2024: 0 institutionsQ1 2025: 0 institutionsQ2 2025: 0 institutionsQ3 2025: 32 institutionsQ4 2025: 39 institutionsQ1 2026: 42 institutionsQ2 2026: 40 institutions
Value heldQ2 2026: $1.50M
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $0Q1 2022: $0Q2 2022: $0Q3 2022: $0Q4 2022: $0Q1 2023: $0Q2 2023: $0Q3 2023: $0Q4 2023: $0Q1 2024: $0Q2 2024: $0Q3 2024: $0Q4 2024: $0Q1 2025: $0Q2 2025: $0Q3 2025: $1.96MQ4 2025: $1.55MQ1 2026: $1.21MQ2 2026: $1.50M
Institutions holding ONCHW and their total value by quarter
QuarterHoldersValue
Q2 202640$1.50M
Q1 202642$1.21M
Q4 202539$1.55M
Q3 202532$1.96M
Q2 20250$0
Q1 20250$0
Q4 20240$0
Q3 20240$0
Q2 20240$0
Q1 20240$0
Q4 20230$0
Q3 20230$0
Q2 20230$0
Q1 20230$0
Q4 20220$0
Q3 20220$0
Q2 20220$0
Q1 20220$0
Q4 20210$0
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding 1RT Acquisition Corp.; share changes are against Q1 2026.

Institutions holding ONCHW in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
UBS Group AG327$1660.00%00.0%Unchanged
Kepos Capital LP5,875$3.00K0.00%00.0%Unchanged
BNP Paribas Arbitrage, SA6,015$3.06K0.00%00.0%Unchanged
Alberta Investment Management Corp6,250$3.18K0.00%00.0%Unchanged
Davidson Kempner Capital Management LP6,249$3.18K0.00%00.0%Unchanged
Susquehanna International Group, LLP11,060$5.64K0.00%+11,060New
Gritstone Asset Management LLC12,358$6.29K0.01%00.0%Unchanged
Galaxy Digital Inc.12,500$6.36K0.00%00.0%Unchanged
Radcliffe Capital Management, L.P.14,830$8.53K0.00%00.0%Unchanged
CNH Partners LLC19,232$9.79K0.00%+171+0.9%Added
Periscope Capital Inc.19,900$10.1K0.00%00.0%Unchanged
Rivernorth Capital Management, LLC22,008$11.3K0.00%00.0%Unchanged
Picton Mahoney Asset Management25,000$12.7K0.00%00.0%Unchanged
Magnetar Financial LLC25,000$12.8K0.00%00.0%Unchanged
K2 Principal Fund, L.P.25,000$12.8K0.00%00.0%Unchanged
DLD Asset Management, LP27,209$13.8K0.00%00.0%Unchanged
Aristeia Capital LLC24,998$14.4K0.00%00.0%Unchanged
Cable Car Capital LLC31,250$15.9K0.00%00.0%Unchanged
Parallax Volatility Advisers, L.P.35,165$17.9K0.00%00.0%Unchanged
Toronto Dominion Bank36,668$18.7K0.00%+15,168+70.5%Added
Clear Street Group Inc.46,633$23.7K0.00%+27,484+143.5%Added
Mint Tower Capital Management B.V.50,000$25.0K0.00%00.0%Unchanged
HGC Investment Management Inc.50,000$25.4K0.01%00.0%Unchanged
Verition Fund Management LLC60,450$30.8K0.00%00.0%Unchanged
Context Capital Management, LLC62,500$31.8K0.00%00.0%Unchanged
Tenor Capital Management Co., L.P.62,500$31.8K0.00%00.0%Unchanged
Moore Capital Management, LP62,500$31.8K0.00%00.0%Unchanged
Healthcare of Ontario Pension Plan Trust Fund62,500$31.9K0.00%00.0%Unchanged
HBK Investments L P62,501$31.9K0.00%00.0%Unchanged
Whitebox Advisors LLC65,000$33.1K0.00%00.0%Unchanged
Governors Lane LP78,927$40.2K0.00%00.0%Unchanged
Shaolin Capital Management LLC79,140$40.3K0.00%+22,336+39.3%Added
Polar Asset Management Partners Inc.129,300$65.8K0.00%+129,300New
Linden Advisors LP127,524$73.4K0.00%00.0%Unchanged
MMCAP International Inc. SPC150,000$76.3K0.01%00.0%Unchanged
Saba Capital Management, L.P.199,997$101.8K0.00%−10.0%Reduced
Jain Global LLC223,575$114.0K0.00%00.0%Unchanged
Harraden Circle Investments, LLC469,973$239.2K0.03%00.0%Unchanged
Meteora Capital, LLC519,406$264.4K0.02%−31,253−5.7%Reduced
Boothbay Fund Management, LLC13,446––+49+0.4%Added
RLH Capital LLC0$00.00%−25,250−100.0%Sold out
Berkley W R Corp0$00.00%−18,604−100.0%Sold out
Quarry LP0$00.00%−12,500−100.0%Sold out
PenderFund Capital Management Ltd.0$00.00%−1,250−100.0%Sold out