Week ahead, 21 Sep 2026: events, expiries and flows for NIFTY, BANKNIFTY and gold

What the week of 21 Sep 2026 carries: the events that move NIFTY, BANKNIFTY and gold, the expiries on the calendar, and how institutions were positioned going in.

Expiries

• 2026-09-22 — NIFTY 50 weekly
• 2026-09-24 — BANKEX monthly
• 2026-09-24 — SENSEX monthly
• 2026-09-29 — BANKNIFTY monthly
• 2026-09-29 — FINNIFTY monthly
• 2026-09-29 — MIDCPNIFTY monthly
• 2026-09-29 — NIFTY 50 monthly
• 2026-09-29 — Stock options (monthly) monthly

Expiry-day plans start with the expected move and the straddle percentile; both are on the morning brief at 09:20.

Flows last week

FIIs were net ₹-8,551 crore and DIIs net ₹+13,200 crore across the week. Foreign selling absorbed by domestic buying is the classic tug-of-war; watch whether FII index futures shorts get covered on strength.

How to trade the week

Sell premium only on days the regime checklist passes (no trend, calm width, mid-range, rich straddle, quiet tape); on event days stand aside until the number is out. The VIP Indicator's SELLER engine runs that checklist on every candle, and its STRUCTURE engine marks the levels that matter before the week starts.

Keep reading

• How to read an option chain in five minutes: OI, PCR, max pain and walls
• Expected move: what the ATM straddle is telling you before you trade
• IV percentile: is the premium rich or cheap today?
• OI build-up explained: long build-up, short build-up, short covering and long unwinding