Reversal Trade Cancellation Mechanism (RTCM)

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National Stock Exchange of India Limited Circular Department: SURVEILLANCE Download Ref No: NSE/SURV/74906 Date: June 25, 2026 Circular Ref. No: 478/2026 To All NSE Members Sub: Reversal Trade Cancellation Mechanism (RTCM) This is with reference to NSE circular no. NSE/SURV/62493 dated June 18, 2024 regarding Reversal Trade Cancellation Mechanism (RTCM). Trading members are requested to make a note of methodology of shortlisting the symbols for which the RTCM shall be made applicable. RTCM will be applicable for the series (i.e. EQ, BE, BZ, SM, ST & SZ) pertaining to the symbols in the file provided “CM_RTCM_jul2026.csv”. The symbols list on which RTCM shall be applicable will be excluding of the following securities 1. Approved securities list published by NSE Clearing Ltd 2. Constituents of Nifty 500 index 3. ETF’s Members may note that the file “CM_RTCM_jul2026.csv” containing the list of symbols (based on the aforesaid methodology) on which RTCM shall be applicable for the month of July 2026, has been made available on the extranet path: /common/Surveillance/RTCM. Please note that RTCM is a facility provided by Exchange (NSE/SURV/62493 dated June 18, 2024) to help prevent incidence of reversal trades between two PANs if certain thresholds are breached. However, the facility of RTCM does not absolve the Trading Members of their obligation to adhere to the provisions of circular NSE/INVG/46662 dated December 16, 2020. In case of any further queries, members might write to us on surveillance@nse.co.in. National Stock Exchange of India Limited Page 2 of 2 For National Stock Exchange of India Limited Mayank Rathod Chief Manager Surveillance