SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 12:14 AM ET
How1 put contracts / 11 call contracts = 0.09 for the 2026-11-20 expiration. Open interest is published once a day, before the open, so it describes the previous session.
Too thin to read: 12 open contracts across 9 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)SFY open contracts per strike for Fri, Nov 20.
Open-interest change: building vs unwinding
Needs two observed snapshot days for this expiration; the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 20.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Greeks by strike · Fri, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.57
-0.10
145
0.0721
0.10
-0.10
-0.43
0.28
-0.08
149
0.0648
0.09
-0.08
-0.72
0.23
-0.07
150
0.0564
0.08
-0.07
-0.78
0.16
-0.06
152
0.0411
0.06
-0.06
-0.85
0.13
-0.06
153
0.0349
0.06
-0.06
-0.88
0.11
-0.05
154
0.0298
0.05
-0.05
-0.90
0.10
-0.05
155
0.0255
0.04
-0.05
-0.91
0.06
-0.04
159
0.0145
0.03
-0.04
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 8 strikes around the money — all 9 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Max pain, walls and gamma print only when an expiration holds at least 100 open contracts across 5 strikes, and max pain also needs to stay within 5% of spot when its single heaviest strike is removed. Below that the expiration reads as thin rather than printing a level one trade could move.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.