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What does the error “Trading is blocked in (instrument) for this session as you are a designated person of the company” mean?

According to regulations (PDF), the trading window for a particular security will be closed for the designated persons of the company who are expected to have unpublished price-sensitive information (UPSI). A “No trading window period” is placed on such securities for the designated persons.


During the "No trading window period", no trading of any kind will be allowed, including exiting existing positions. All the open positions need to be exited before the trading window closes. The duration of this period will be communicated to the designated persons by the company and will also be specified on the company’s website.

Did you know? The designated person can submit a declaration to [email protected] for exemption from the closure of the trading window. The declaration can be found in the CDSL circular (PDF).