The BSE will take a "wait and watch" approach to gauge the market share impact in derivatives volume after SEBI allotted Thursday as the expiry day for futures and options contracts.
"Thursday expiry has been there in India for a long time. We cannot make an assessment yet," BSE Chief Executive Officer Sundararaman Ramamurthy told NDTV Profit on Tuesday.
"Transaction revenue is based on market volumes which are influenced by many factors. It cannot be pre-judged," he said, responding to the financial impact of the change.
Ramamurthy also said the exchange was "very happy" with the Tuesday expiry, but opted for Thursday after larger rival National Stock Exchange chose the former after SEBI called for their preferences.
"We were very happy with Tuesday as expiry but NSE said they are going with it. In the interest of the market, we have taken Thursday," he said.
In May, the capital markets regulator introduced new regulations for equity derivatives, mandating that all such contracts must now expire exclusively on either a Tuesday or a Thursday.
Each exchange was permitted to select one of these days for the weekly expiry of its benchmark index options contract.
BSE said the new schedule will apply to all new equity derivatives contracts that expire on or after Sept. 1, 2025. Monthly contracts will specifically expire on the last Thursday of each month.
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