Reversal Trade Cancellation Mechanism
NSE circular 649/2026 · 24 Aug 2026
Official title
Reversal Trade Cancellation Mechanism (RTCM)
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India Limited defines the methodology for shortlisting symbols under the Reversal Trade Cancellation Mechanism for September 2026. The mechanism applies to series EQ, BE, BZ, SM, ST, and SZ. The Exchange excludes approved securities, Nifty 500 index constituents, and ETFs from this list. Trading members must access the symbol list in the file CM_RTCM_sep2026.csv on the extranet path. The facility helps prevent reversal trades between two PANs when thresholds are breached. This facility does not remove the obligation of trading members to follow the provisions of circular NSE/INVG/46662 dated December 16, 2020.
What you must do
- Trading members must access the symbol list file from the extranet path.
Key dates
- Applicability period for September 2026
- Not dated
Who is affected
Document text
National Stock Exchange of India Limited
Circular
| Department: SURVEILLANCE | |
|---|---|
| Download Ref No: NSE/SURV/75929 | Date: August 24, 2026 |
| Circular Ref. No: 649/2026 | |
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_sep2026.csv”. The symbols list on which RTCM shall be applicable will be excluding of the following securities
- Approved securities list published by NSE Clearing Ltd
- Constituents of Nifty 500 index
- ETF’s
Members may note that the file “CM_RTCM_sep2026.csv” containing the list of symbols (based on the aforesaid methodology) on which RTCM shall be applicable for the month of September 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.
Continuation Sheet
National Stock Exchange of India Limited
For National Stock Exchange of India Limited
Mayank Rathod
Chief Manager
Surveillance
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 24 Aug 2026
- Document number
- 649/2026
- Issuing division
- SURVEILLANCE
- Coverage area
- securities