HowThe settle strike with the smallest total payout to option holders for the 2026-11-20 expiration, over 16 strikes carrying 126 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 9, 7:44 PM ET
How11 put contracts / 115 call contracts = 0.10 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 9, 7:44 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.
■ 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 — 18 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)BZQ 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 ≈ 61.8% · 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
0.95
-0.02
14
0.0189
0.00
-0.02
-0.05
0.94
-0.03
15
0.0255
0.00
-0.03
-0.06
0.92
-0.03
16
0.0351
0.01
-0.03
-0.08
0.90
-0.03
17
0.0494
0.01
-0.03
-0.11
0.86
-0.03
18
0.0711
0.01
-0.03
-0.15
0.79
-0.04
19
0.1038
0.01
-0.04
-0.21
0.68
-0.04
20
0.1449
0.01
-0.04
-0.32
0.52
-0.04
21
0.1649
0.01
-0.04
-0.48
0.38
-0.05
22
0.1437
0.01
-0.05
-0.62
0.28
-0.05
23
0.1132
0.01
-0.04
-0.72
0.22
-0.04
24
0.0889
0.01
-0.04
-0.78
0.18
-0.04
25
0.0712
0.01
-0.04
-0.82
0.15
-0.04
26
0.0583
0.01
-0.04
-0.85
0.09
-0.04
30
0.0312
0.01
-0.03
-0.91
0.06
-0.03
35
0.0181
0.00
-0.03
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 16 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.