What the option chain shows
GIFT Nifty is trading at +0.10% (+23.75 points) in the pre-market window, a muted opening signal ahead of expiry. Monday's close saw both indices suffer sharp declines—Nifty fell 1.58% or 365.94 points, while Sensex dropped 1.55% or 1,141.97 points—leaving a cautious tone entering this final expiry session for Nifty's monthly contract.
Today is expiry day for Nifty options and futures, whereas Sensex carries two sessions remaining before its monthly close. This timing mismatch shapes the near-term character: Nifty will likely see position unwinding and expiry-related volatility, while Sensex may retain slightly longer-term positioning patterns through Wednesday's settlement.
Bias and readiness
India VIX sits at 13.64, reflecting contained implied volatility despite the prior session's sharp move. The five-day average daily range tells a different story—Nifty has moved 203.24 points per session on average, while Sensex has swung 660.47 points, signaling elevated realized move even as forward-looking volatility appears restrained.
Chart technicals show Nifty support at 22,668.22 with resistance overhead at 22,986.27. Sensex support lies at 72,411.68, resistance at 73,436.30. The options chain reveals meaningful structure: Nifty open interest support sits at 22,000 with resistance at 23,000, both showing Addition activity in recent bars—suggesting fresh put and call buildup rather than unwinding into expiry. Sensex OI support is anchored at 68,000 with resistance at 75,000; both levels are also seeing Addition, implying participants are still building rather than closing positions ahead of Sensex's two-day runway.
Levels to watch
The combination of modest gap-up, fresh OI additions at both indices' option strikes, and subdued VIX suggests a measured rather than panicked opening setup. With Nifty expiring today, attention will shift quickly to micro-level support and resistance as time decay accelerates. Sensex, having more calendar runway, may see steadier option positioning through the session. Watch how Asian markets respond overnight and whether the 203-point average daily range in Nifty reasserts itself at the open.