HowThe settle strike with the smallest total payout to option holders for the 2026-11-20 expiration, over 43 strikes carrying 148,765 open contracts. Open interest is published once a day, before the open, so it describes the previous session.
SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 8, 8:19 PM ET
How50,037 put contracts / 98,728 call contracts = 0.51 for the 2026-11-20 expiration. Open interest is published once a day, before the open, so it describes the previous session.
SourceNet gamma exposure from Cboe greeks and open interest
As ofCboe delayed snapshot Nov 8, 8:19 PM ET
HowOver every strike with open interest for the 2026-11-20 expiration: (call gamma × call OI minus put gamma × put OI) × 100 × spot² × 1%, summed. Calls count as positive and puts as negative, a convention about who holds the other side, not a measurement.
Event risk before this expiration:CPI release Tue, Nov 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 89 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)KO 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 ≈ 20.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.03
90
0.0353
0.03
-0.03
-0.09
0.88
-0.03
91
0.0470
0.04
-0.03
-0.13
0.83
-0.04
92
0.0606
0.05
-0.04
-0.17
0.80
-0.04
92.5
0.0678
0.05
-0.04
-0.21
0.76
-0.05
93
0.0749
0.06
-0.05
-0.24
0.68
-0.05
94
0.0882
0.07
-0.05
-0.32
0.59
-0.06
95
0.0979
0.07
-0.06
-0.41
0.49
-0.06
96
0.1018
0.07
-0.06
-0.52
0.39
-0.05
97
0.0987
0.07
-0.06
-0.62
0.34
-0.05
97.5
0.0946
0.07
-0.05
-0.67
0.30
-0.05
98
0.0892
0.07
-0.05
-0.71
0.22
-0.04
99
0.0758
0.06
-0.04
-0.80
0.15
-0.03
100
0.0605
0.04
-0.03
-0.86
0.10
-0.02
101
0.0458
0.04
-0.03
-0.91
0.07
-0.02
102
0.0334
0.03
-0.02
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 43 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.