Mumbai, Sept. 8 -- BSE Ltd's chief executive isn't unduly perturbed by any proposed change to the contract expiry schedule for index options, one of its most popular products that has allowed it to snatch market share from its much larger rival, the National Stock Exchange, even as it lags in the cash segment by a wide margin. He is also unfazed by challenges from potential new entrants.

Regulations in India are "co-created" with the market regulator Securities and Exchange Board of India (Sebi) following a due process of constituting an expert working group (EWG), which lays down the "tenets" of change before seeking public views on them, according to Sundararaman Ramamurthy, managing director and chief executive officer of BSE since Ja...