HowThe settle strike with the smallest total payout to option holders for the 2026-11-20 expiration, over 26 strikes carrying 48,175 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 10, 7:51 PM ET
How6,082 put contracts / 42,093 call contracts = 0.14 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 10, 7:51 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 — 7 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)SG 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 ≈ 74.0% · 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
0.97
-0.01
9.5
0.0282
0.00
-0.01
-0.03
0.95
-0.01
10
0.0403
0.00
-0.01
-0.04
0.94
-0.01
10.5
0.0584
0.00
-0.01
-0.06
0.91
-0.02
11
0.0844
0.00
-0.02
-0.10
0.86
-0.02
11.5
0.1194
0.01
-0.02
-0.14
0.79
-0.03
12
0.1613
0.01
-0.03
-0.21
0.70
-0.03
12.5
0.2019
0.01
-0.03
-0.30
0.59
-0.03
13
0.2291
0.01
-0.03
-0.41
0.47
-0.03
13.5
0.2346
0.01
-0.03
-0.53
0.36
-0.03
14
0.2191
0.01
-0.03
-0.64
0.27
-0.03
14.5
0.1902
0.01
-0.03
-0.73
0.20
-0.02
15
0.1563
0.01
-0.02
-0.81
0.14
-0.02
15.5
0.1234
0.01
-0.02
-0.86
0.05
-0.01
17
0.0530
0.00
-0.01
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 26 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.