Daily digest / Bank Nifty / 2026-09-18 · this week
Bank Nifty · Friday 18 Sep 2026 · close
56,521
+206.0 (+0.37%)
Expiry Tue 29 Sep · 7 sessions
Quiet, range-bound session
Bank Nifty traded a narrow 333 pts range and closed at 56,521. Put writers added the most fresh OI at 55,500 (+1.4 L). Call writers built positions at 55,900–58,500, led by 58,500 (+0.3 L). Max pain moved from 57,100 to 57,200, following price up. PCR rose from 0.83 to 0.96.
Spot
Max pain
PCR
15-min · IST
Key levels into expiry
58,500
Fresh calls +0.3 L
cap
58,000
Call wall · 16.5 L OI
resistance
57,200
Max pain
magnet
56,800
Fresh calls +0.2 L
cap
56,521
Close
●
55,500
Fresh puts +1.4 L
support
54,500
Fresh puts +1.2 L
support
54,000
Put wall · 10.1 L OI
floor
Where writers added today
■ calls ■ puts · OI change from the first snapshot to the close, strikes near spot
Move vs what options priced
Monthly ATM straddle at open1,047
Session range333
The session used 32% of the monthly straddle's priced move.
Last 6 sessions
Reading these numbers
- Max pain is the strike where option buyers collectively lose the most at expiry. It often drifts with price, and the pull tends to strengthen into expiry.
- Fresh OI shows where option writers opened new positions during the session. Heavy put writing below price often marks a level sellers expect to hold; heavy call writing above marks a ceiling.
- PCR is put OI ÷ call OI for the monthly expiry.
- Straddle vs range compares the ATM straddle price at the open (what options priced in) with the distance price actually covered.
Descriptive summaries of recorded option-chain positioning, generated automatically — not trading signals or advice.
Read the disclaimer →
Related reading
PCR explained →
How put-call ratio is calculated and when it misleads.
Max pain theory →
Why max pain matters near expiry.
OI buildup →
Reading the four OI patterns.