BSE and Angel One fell nearly 7% after SEBI Chair Tuhin Kanta Pandey said the regulator may extend equity derivative tenures, with a consultation paper due soon. Analysts warned longer contracts could cut liquidity and retail participation, sparking fears of a hit to brokers and exchanges. BSE slid to ₹2,364, with key support at ₹2,280 and resistance at ₹2,585.