◆ Mixed
Nifty monthly expiry meets CAS today: Why the last 30 minutes of the Tuesday trading session could be most important
29 Sept 2026 · LiveMint Markets
As Nifty is set for both weekly and monthly options expiry, heightened volatility is expected in today's trading session. The introduction of the Closing Auction Session (CAS) is intensifying price swings, prompting a closer look at how these elements influence index behaviour and market strategies.
The analysis
Because the driver here is macro rather than company-specific, the read-through is to index-level positioning rather than to any single name — correlations tend to rise when the whole market faces the same signal.
Market context
- This is a market-wide development — its reach goes beyond any single stock.