BSE Shares Zoom 14% In Just 5 Minutes - What’s The Reason?

In a dramatic market reaction, Bombay Stock Exchange (BSE) saw its shares spike by over 14% to an intraday peak of Rs 5,364.40, buoyed by the National Stock Exchange's (NSE) decision to delay the implementation of a new weekly expiry day.

BSE Share Price Today 

The stock opened today at Rs 5,000.00 and reached an intraday high of Rs 5,364.40. As of 10:27 AM, the stock is trading at Rs 5,346.95, showing a gain of Rs 662.60, or 14.14%.

This decision, initially set to take effect from April 4, 2025, was put on hold following SEBI's proposal to standardize expiry days across exchanges.

SEBI's Proposal for Market Stability
SEBI's recent consultation paper proposes the adoption of uniform expiry days for equity derivatives, suggesting Tuesdays or Thursdays as preferred days. The aim is to mitigate market volatility and ensure greater stability for traders. The regulator also recommends exchanges seek prior approval before making any changes to expiry schedules, reflecting a cautious approach towards market reforms.

"Spacing out of expiry days through the week reduces concentration risk, and provides an opportunity to exchanges to offer product differentiation to market participants. At the same time, too many expiry days has the potential to revive expiry day hyperactivity, which could jeopardize investor protection and market stability," SEBI said.

SEBI's proposal aligns with NSE's decision to shift the expiry day of key indices such as Nifty, Bank Nifty, FinNifty, Nifty Next50, and Nifty Midcap Select from Thursday to Monday. The circular, issued on March 4, announced this change, set to commence on April 4, 2025.

Additionally, under the new guidelines, apart from benchmark index options, all other equity derivative contracts—including benchmark index futures, non-benchmark index futures, options, and single stock futures and options—will have a minimum tenure of one month. These contracts are scheduled to expire in the last week of each month on their respective expiry day.