Circuit Filter Change: Bombay Stock Exchange (BSE) has decided to implement a new revised price band i.e. circuit limit on the shares of 36 companies from November 10, 2025. Its purpose is to control abnormal trading activities of those stocks which see sudden sharp fluctuations in price or volume.
In such cases, the exchange takes action under its surveillance mechanism. If necessary, the price band i.e. circuit limit can be reduced by 2%, 5% or 10%. If the risk is high, the exchange may reduce the circuit limit to 1% and trading to once a week.
What are the surveillance measures of BSE?
BSE is not limited to just reducing the price band. This also includes sending any share to the trade-to-trade segment, applying special margin or suspending any share or member if necessary.
The price band is decided so that the price of a stock does not rise or fall too much suddenly in a single day. If abnormal volatility is observed in a stock, a more stringent price band is imposed on it.
When does special margin apply?
When there is a sudden sharp rise in the price of a stock or its trading volume, then BSE can impose special margin on it. This margin can be up to 25%, 50% or 75%. Its objective is to protect investors from risks caused by rumours, circuit-based bullishness or misinformation.
BSE Revised Circuit Filter List (effective from 10 November 2025)
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