RP Investment Advisors LP - 24 Feb 2026 SCHEDULE 13G Report for 1RT ACQUISITION CORP. Class A ordinary shares, par value $0.0001 per share (ONCH)

Filing Manager
RP Investment Advisors LP
Reporting Manager
RP Investment Advisors LP
Security
1RT ACQUISITION CORP. Class A ordinary shares, par value $0.0001 per share
Symbol
ONCH
Shares outstanding
17,310,000 shares
Disclosed Ownership
865,500 shares
Ownership
5%
Form type
SCHEDULE 13G
Filing time
03 Mar 2026, 12:02:08 UTC
Date of event
24 Feb 2026
SEC
View on sec.gov

Quoteable Key Fact

"RP Investment Advisors LP disclosed 5% ownership in 1RT ACQUISITION CORP. Class A ordinary shares, par value $0.0001 per share (ONCH) on 24 Feb 2026."

Quick Takeaways

  • RP Investment Advisors LP filed SCHEDULE 13G for 1RT ACQUISITION CORP. Class A ordinary shares, par value $0.0001 per share (ONCH).
  • Disclosed ownership: 5%.
  • Date of event: 24 Feb 2026.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 03 Mar 2026, 12:02.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (5)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
RP Investment Advisors LP 5% 865,500 0 865,500 /s/ Richard Pilosof Richard Pilosof, Chief Executive Officer, RP Investment Advisors LP by its General Partner RP Investment Advisors GP Inc.
RP Select Opportunities Master Fund Ltd. 1.9% 320,783 0 320,783 /s/ Richard Pilosof Richard Pilosof, Chief Executive Officer, RP Investment Advisors LP by its General Partner RP Investment Advisors GP Inc.
RP Debt Opportunities Fund Ltd. 1.1% 194,886 0 194,886 /s/ Richard Pilosof Richard Pilosof, Chief Executive Officer, RP Investment Advisors LP by its General Partner RP Investment Advisors GP Inc.
RP Alternative Global Bond Fund 1.5% 264,822 0 264,822 /s/ Richard Pilosof Richard Pilosof, Chief Executive Officer, RP Investment Advisors LP by its General Partner RP Investment Advisors GP Inc.
RP Alternative Credit Opportunities Fund 0.5% 85,009 0 85,009 /s/ Richard Pilosof Richard Pilosof, Chief Executive Officer, RP Investment Advisors LP by its General Partner RP Investment Advisors GP Inc.