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SEBI Keeps Closing Auction Session but Will Rework Derivatives Settlement

The regulator will publish proposals for public consultation to change expiry-day settlement rules to ease last-minute volatility.

Overview

  • SEBI chairman Tuhin Kanta Pandey said on Thursday that the Closing Auction Session will remain in place while the regulator studies adjustments to how derivative closing prices are set.
  • Regulator officials plan to publish proposals for public consultation that target the expiry-day settlement methodology and may include changes to the time interval used to compute reference prices.
  • Markets experienced abrupt minute-by-minute moves on expiry days, with the Sensex jumping roughly 1,186 points in two minutes before settling lower, a pattern SEBI links to thin liquidity during CAS windows.
  • SEBI cited MSCI’s confirmation that its August 31 index rebalancing completed without operational problems as evidence that CAS can function as market liquidity builds.
  • Separately, SEBI is pushing technology reforms by piloting tokenised corporate bonds under Demat 2.0 and adopting international AI supervisory toolkits to strengthen near-real-time market oversight.