BSE share price tumbles 8%; here's why

Shares of India’s oldest stock exchange, BSE, traded nearly 8% lower on Wednesday morning at ₹4,085 apiece on the NSE after its peer changed the dates of its weekly and monthly derivatives expiry days to Monday.

The National Stock Exchange, or NSE, yesterday changed its weekly expiry days from Thursday to Monday and its monthly expiry days for NIFTY50, FIN NIFTY, NIFTY Midcap, and BANK NIFTY to the last Monday of the month. BSE, which also has derivative products, expires on Tuesday of every week for weekly expiries, and the last Tuesday for monthly expires. BSE derivatives expire on every Tuesday for weekly expiries and the last Tuesday for monthly expiries.

According to experts, the change in expiry days by the NSE is expected to impact derivatives volumes on the BSE.As per Q3FY25 results, the equity derivatives category contributed nearly 41% of the total income for the quarter at ₹353 crore.

BSE shares witnessed a relentless rally from ₹532 apiece in April 2023 after it started derivatives segment to ₹6,047 in February 2025. Revenues also jumped from ₹360 crore in Q2FY24 to ₹832 crore in Q3FY25. In a similar period, equity derivatives segment revenue grew from ₹4.8 crore to ₹353 crore.

On a 9MFY25 basis, the company’s total income more than doubled at ₹2,328 crore as compared to ₹1,069 crore in 9MFY24. Similarly, the EBITDA for the 9MFY25 also jumped multifold to ₹1,105 crore as compared to ₹456 crore in previous year similar period.

On Monday, BSE shares closed 5.9% lower after global brokerage firms Goldman Sachs changed its rating to neutral after SEBI introduced a consultation paper on reducing volatility in derivatives trading. The potential regulatory move could impact company's derivatives business segment.