SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 9:14 PM ET
How29 put contracts / 59 call contracts = 0.49 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: 88 open contracts across 17 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)ASR 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
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 44.0% · 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
0.96
-0.30
190
0.0019
0.04
-0.28
-0.05
0.95
-0.32
200
0.0024
0.04
-0.30
-0.06
0.94
-0.33
210
0.0032
0.05
-0.32
-0.07
0.89
-0.36
230
0.0058
0.08
-0.35
-0.12
0.85
-0.38
240
0.0084
0.10
-0.36
-0.16
0.79
-0.39
250
0.0125
0.13
-0.37
-0.22
0.67
-0.38
260
0.0191
0.16
-0.37
-0.34
0.45
-0.35
270
0.0234
0.17
-0.34
-0.55
0.18
-0.30
290
0.0115
0.12
-0.29
-0.82
0.13
-0.28
300
0.0080
0.09
-0.27
-0.86
0.10
-0.26
310
0.0059
0.08
-0.25
-0.89
0.08
-0.24
320
0.0046
0.07
-0.23
-0.91
0.07
-0.23
330
0.0036
0.06
-0.22
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 13 strikes around the money — all 17 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.