Sebi has intensified scrutiny of the options market following surveys highlighting significant retail losses. The regulator floated the idea of extending derivative contract tenures last month and recently introduced measures such as delta-based open interest calculation. These changes could impact major market participants, potentially moderating trading volumes and reducing volatility, while Kamath acknowledged possible restrictions on weekly options or stricter suitability norms.
US stocks today: Dow posts closing record high, S&P 500, Nasdaq muted as AI rally pauses
US stocks ended mixed as the Dow hit a record closing high driven by healthcare and consumer gains, while tech and chip stocks lagged. Banking
May 27, 2026