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News Topical, Digital Desk : The Bombay Stock Exchange (BSE) has implemented a circuit filter (Revised Price Band) on the shares of 57 companies, effective September 22, 2025. This move by the BSE aims to curb unusual trading activity and protect investors from potential risks. Under its regular surveillance mechanism, the BSE selects stocks that experience sudden fluctuations in volume or price and then takes necessary action. As a result, the price band of several stocks has been reduced to 2%, 5%, and 10%.

BSE's surveillance measures include lowering circuit filters, placing a stock in the trade-to-trade segment, imposing special margins, and suspending the stock or member if necessary. The BSE sets a price band for each stock to prevent a sudden significant rise or fall in its price. If a stock exhibits unusual volatility, a stricter band is imposed. Why is a Special Margin imposed? Special margins are imposed when a stock experiences an unusual increase in price or trading volume. In such situations, the BSE may impose special margins of 25%, 50%, or even 75%. Its purpose is to protect investors from significant losses due to rumors or speculation.


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bse circuit filter revised price band trade-to-trade segment special margin Stock Market Surveillance Investor Protection stock volatility Unusual Trading September 15 2025 Circuit Filter Change BSE imposed circuit filter on the shares of 60 companies