■ 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 — 75 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)KNX 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 ≈ 36.9% · 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
0.92
-0.01
55
0.0090
0.05
-0.01
-0.08
0.90
-0.01
57.5
0.0116
0.07
-0.01
-0.10
0.86
-0.02
60
0.0147
0.08
-0.02
-0.14
0.82
-0.02
62.5
0.0181
0.10
-0.02
-0.18
0.77
-0.02
65
0.0215
0.11
-0.02
-0.24
0.71
-0.02
67.5
0.0248
0.13
-0.03
-0.30
0.64
-0.03
70
0.0274
0.14
-0.03
-0.37
0.57
-0.03
72.5
0.0291
0.15
-0.03
-0.44
0.49
-0.03
75
0.0297
0.15
-0.03
-0.52
0.42
-0.03
77.5
0.0292
0.15
-0.03
-0.59
0.36
-0.03
80
0.0278
0.14
-0.03
-0.66
0.30
-0.02
82.5
0.0258
0.13
-0.03
-0.72
0.25
-0.02
85
0.0233
0.12
-0.02
-0.78
0.21
-0.02
87.5
0.0207
0.11
-0.02
-0.82
0.11
-0.01
95
0.0135
0.07
-0.01
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 23 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.
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.