SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 9, 8:51 PM ET
How28 put contracts / 44 call contracts = 0.64 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: 72 open contracts across 18 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Event risk before this expiration:CPI release Tue, Nov 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
Too thin to read: 72 open contracts across 18 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)IBP 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 ≈ 54.0% · 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
0.95
-0.16
170
0.0026
0.04
-0.16
-0.05
0.94
-0.18
175
0.0032
0.04
-0.18
-0.06
0.91
-0.22
185
0.0048
0.06
-0.23
-0.09
0.89
-0.25
190
0.0060
0.07
-0.25
-0.11
0.87
-0.28
195
0.0074
0.08
-0.28
-0.13
0.83
-0.31
200
0.0091
0.10
-0.31
-0.17
0.73
-0.36
210
0.0135
0.13
-0.37
-0.27
0.58
-0.40
220
0.0174
0.15
-0.41
-0.42
0.40
-0.39
230
0.0175
0.15
-0.39
-0.60
0.26
-0.34
240
0.0141
0.13
-0.34
-0.74
0.17
-0.29
250
0.0102
0.10
-0.29
-0.83
0.12
-0.24
260
0.0073
0.08
-0.24
-0.88
0.04
-0.13
300
0.0024
0.03
-0.12
-0.96
0.03
-0.11
310
0.0019
0.03
-0.10
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 18 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.