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1RT Acquisition Corp.

ONCHU
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; 17 institutions reported holding it in 13F filings for Q2 2026, worth $32.7M in total; no superinvestor holds it.

Other share classesONCHONCHW

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
17
−2 vs. Q1 2026
Shares held
3.16M
−588.6K (−15.7%) vs. Q1 2026
Total value
$32.7M
−$5.83M (−15.1%) vs. Q1 2026
New holders
1
2 more added
Sold out
3
2 more reduced

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

Holders and value by quarter

Institutions reporting ONCHU 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: 17 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: 44 institutionsQ4 2025: 24 institutionsQ1 2026: 19 institutionsQ2 2026: 17 institutions
Value heldQ2 2026: $32.7M
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: $76.6MQ4 2025: $41.6MQ1 2026: $38.5MQ2 2026: $32.7M
Institutions holding ONCHU and their total value by quarter
QuarterHoldersValue
Q2 202617$32.7M
Q1 202619$38.5M
Q4 202524$41.6M
Q3 202544$76.6M
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 ONCHU in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Point72 Asset Management, L.P.1,500,000$15.5M0.02%00.0%Unchanged
LMR Partners LLP700,000$7.24M0.05%00.0%Unchanged
Ghisallo Capital Management LLC250,000$2.60M0.05%00.0%Unchanged
Citadel Advisors LLC172,678$1.80M0.00%+2,977+1.8%Added
Toronto Dominion Bank102,438$1.06M0.00%00.0%Unchanged
PEAK6 LLC75,000$775.5K0.02%00.0%Unchanged
Kamunting Street Capital Management, L.P.60,000$620.0K0.35%00.0%Unchanged
JPMorgan Chase & Co50,000$517.0K0.00%00.0%Unchanged
Omers Administration Corp49,991$516.9K0.00%00.0%Unchanged
HRT Financial LP48,842$507.0K0.00%+2,141+4.6%Added
Clear Street Group Inc.40,583$419.6K0.00%−92,700−69.6%Reduced
Westchester Capital Management, LLC30,820$320.5K0.02%00.0%Unchanged
Yakira Capital Management, Inc.24,485$253.2K0.07%00.0%Unchanged
Susquehanna International Group, LLP19,128$198.9K0.00%+19,128New
Parallax Volatility Advisers, L.P.12,187$126.7K0.00%−10.0%Reduced
Walleye Capital LLC10,000$104.0K0.00%00.0%Unchanged
Readystate Asset Management LP10,000$104.0K0.00%00.0%Unchanged
Polar Asset Management Partners Inc.0$00.00%−500,000−100.0%Sold out
Scoggin Management LP0$00.00%−20,000−100.0%Sold out
UBS Group AG0$00.00%−179−100.0%Sold out