New Delhi, Oct. 12 -- Mumbai: Capital markets regulator Sebi will decide on the fate of weekly equity index option expiries only after assessing the impact of its latest measures taken in July and after a consultative process with market stakeholders, said Ananth Narayan, former Securities and Exchange Board of India (Sebi) whole-time member whose three-year eventful term ended on Thursday.

The measures, intended to prevent market manipulation, included changing the method of calculating limits on clients' outstanding positions, commonly referred to as open interest (OI)-a measure of money flowing into the market-and intraday monitoring of these limits.

"With the delta-based limits and intraday monitoring introduced from July 2025, it's...