RP Investment Advisors LP Reports 6.3% Stake in 1RT Acquisition Corp. (ONCH)

RP Investment Advisors LP has filed a Schedule 13G/A reporting a 6.3% ownership stake in 1RT Acquisition Corp. (ONCH). This filing, dated May 15, 2026, reflects the beneficial ownership of 1,080,906 Class A ordinary shares as of March 31, 2026. The position is held jointly by several entities, including RP Select Opportunities Master Fund Ltd., RP Debt Opportunities Fund Ltd., RP Alternative Global Bond Fund, and RP Alternative Credit Opportunities Fund, for which RP Investment Advisors LP serves as the investment advisor. The individual fund holdings range from 0.5% to 2.8% of the outstanding shares. This represents an increase from a previous ownership level of 0.0%. The calculation is based on 17,250,000 Class A ordinary shares outstanding as of March 18, 2026. The reporting persons have certified that the securities were not acquired for the purpose of changing or influencing the control of the issuer.