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SEBI Proposes Closing Auction Session for Derivative Stocks

25 August 20251 min read
BANKING & FINANCESEBI ProposesClosing AuctionSession forDerivative Stocks25 August 2025safalsetu.com

Why in the news

SEBI wants a short end-of-day auction to make closing prices steadier, beginning with derivative stocks.

Key facts

  • Purpose: one closing price with less volatility and manipulation at the close.
  • Traders place buy or sell orders during the window.
  • Unmatched orders carry to the next trading day, subject to exchange rules.
  • The window falls in the last few minutes of the session; length varies by exchange.

Importance

  • Transparent, fair price discovery.
  • Used for portfolio valuations, index calculation and NAVs.
  • Exchanges named: NSE and BSE.

Exam angle

  • Full form: Closing Auction Session.
  • Proposed by SEBI.

Test yourself

1. What does CAS stand for in SEBI's closing price proposal?

CAS means Closing Auction Session.

2. A Closing Auction Session determines which value for a share?

It decides the share's closing price.

3. In a Closing Auction Session, orders are matched at what kind of price?

Orders match at one equilibrium price where most volume trades.