SEBI ends F&O Expiry Clash between NSE and BSE
- finminati
- Jun 18
- 2 min read
Updated: Jun 28
18 June 2025, Wednesday
SEBI has brought an end to the F&O expiry day clash between NSE and BSE, India’s top 2 stock exchanges. This clash is regarding the expiry day for the weekly index derivatives.
The regulator has assigned the following days as expiry days:
Tuesday for NSE
Thursday for BSE
Highlights of the Article
History between SEBI, NSE, BSE and F&O expiry
Change in Expiry Day and its Implementation
Impact of the Shift
Some Related Fun Facts
History
Earlier when BSE was allowed to offer F&O contracts, there was a huge surge in different expiries for multiple indices.
At one point, there was practically at least 1 expiry every trading day of the week.
SEBI then tried to curb this by amending the rules for the exchanges regarding F&O contracts.
Hence, previously SEBI had directed the exchanges to limit weekly index derivatives expiries to Tuesdays and Thursdays. The exchanges were to submit their preferences by mid-June.
Changes and their Implementation
Expiry dates for existing contracts (till 31st August 2025), for both NSE and BSE, would remain unchanged.
However, expiry dates for long-dated index options will be realigned as per past practices.
New expiry days will be implemented for new contracts, 1st September 2025 onwards.
Monthly contracts will now expire on the last Tuesday of the month.
The exchanges are not going to issue any fresh weekly index futures after 1st July 2025.
Impact
Reduce expiry-day clustering
More orderly derivatives market
This shift will likely help NSE claw back some market share from its rival BSE.
BSE’s turnover might be affected slightly due to this shift.
Any future change in expiry days by the exchanges would require prior SEBI approval.
Some Related Fun Facts
Income from derivatives trading makes up a large part of the revenue for both stock exchanges.
NSE currently commands 90% market share in derivatives.
Sources / References:
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