Daily digest / Finnifty / 2026-09-18 · this week
Finnifty · Friday 18 Sep 2026 · close
26,830
+0.0 (+0.00%)
Expiry Tue 29 Sep · 7 sessions
Early sell-off, closes near the lows
Finnifty slid 1,376 pts from 25,454 at 09:30 to 26,830 by 09:45 IST. Put writers added the most fresh OI at 25,600 (+0.1 L). Call writers built positions at 25,550–26,200, led by 25,700 (+0.2 L). Max pain held at 25,650 all session.
Spot
Max pain
25,500 support
PCR
15-min · IST
Key levels into expiry
27,000
Call wall · 0.9 L OI
resistance
26,830
Close
●
25,650
Max pain
magnet
25,600
Fresh puts +0.1 L
support
25,500
Fresh puts +0.0 L · held the low · Put wall · 0.3 L OI
support
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 open962
Session range1,377
One session moved 1.4× the monthly straddle's full 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.