BSE's larger rival NSE, which generally commands more than 80 per cent of market share in equity derivatives market, today recorded a lower F&O turnover of Rs 3.29 crore.
This included index option turnover of Rs 2.29 crore. This is the first time that BSE has recorded a higher F&O turnover than that of NSE.
Overall, total market turnover of BSE and NSE combined topped Rs 6.67 lakh crore to mark a new record.
In comparison, NSE's F&O turnover has ranged between Rs 1.15 lakh crore to Rs 2.75 lakh crore this month, before crossing Rs 3 lakh crore mark today.
The development comes just two days ahead of the expiry of current month derivative contracts on Thursday. The markets incidentally witnessed a strong rally today and the benchmark index Sensex rallied by over 337 points to close at 25,368.90.
Traders also said a new Liquidity Enhancement Incentive Programme for Derivatives, introduced by BSE with effect from May 30, 2014 for Sensex options and other contracts could have been at play.
When contacted, a BSE spokesperson declined comment.
The incentive programme has been approved by the Sebi, but it can look into the matter if it suspects any abuse, a regulatory official said.
Even within the Index Option Put Contract segment, just three contracts accounted for almost entire volume.
While one contract, put option for Sensex value of 24,400 points recorded a turnover of over Rs 2.06 lakh crore, another for Sensex at 24,600 points of over Rs 1.07 lakh crore and the third contract for Sensex at 24,200 points saw a turnover of more than Rs 19,000 crore.
