Market Pulse
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markets · beginner

Pre-open session

The pre-open session is the morning call-auction window used to discover the opening price on NSE and BSE.

Order entry, modification, and cancellation follow a timed sequence before matching.

The opening price becomes the reference for the continuous trading session that follows.

Index open values are heavily influenced by pre-open discovery in heavyweight stocks.

Market orders and limit orders interact under exchange pre-open matching rules.

Part of the Market Pulse Term of the Day series — factual market vocabulary, not investment advice.