Event risk before this expiration:CPI release Wed, Oct 14 · FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · 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 — 150 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)EFX 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 ≈ 49.3% · 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
-0.03
110
0.0035
0.05
-0.03
-0.04
0.93
-0.04
115
0.0050
0.06
-0.04
-0.07
0.90
-0.05
120
0.0068
0.09
-0.06
-0.10
0.86
-0.07
125
0.0090
0.11
-0.07
-0.14
0.80
-0.08
130
0.0113
0.13
-0.09
-0.20
0.74
-0.10
135
0.0135
0.16
-0.10
-0.26
0.66
-0.11
140
0.0154
0.18
-0.11
-0.34
0.58
-0.12
145
0.0167
0.19
-0.12
-0.42
0.49
-0.12
150
0.0172
0.19
-0.12
-0.51
0.41
-0.12
155
0.0168
0.19
-0.12
-0.59
0.34
-0.11
160
0.0158
0.18
-0.11
-0.67
0.27
-0.10
165
0.0142
0.16
-0.10
-0.74
0.21
-0.09
170
0.0124
0.14
-0.09
-0.80
0.17
-0.07
175
0.0105
0.12
-0.07
-0.84
0.13
-0.06
180
0.0088
0.10
-0.06
-0.88
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 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.
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.