Event risk before this expiration:Jobs report Fri, Aug 7 · CPI release Wed, Aug 12 — 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 — 100 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)ROAD open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 69.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.99
-0.02
70
0.0018
0.01
-0.02
-0.01
0.97
-0.03
75
0.0032
0.01
-0.04
-0.03
0.95
-0.05
80
0.0054
0.02
-0.06
-0.05
0.92
-0.08
85
0.0089
0.03
-0.08
-0.08
0.86
-0.11
90
0.0135
0.05
-0.12
-0.14
0.78
-0.15
95
0.0188
0.07
-0.15
-0.23
0.67
-0.18
100
0.0236
0.08
-0.18
-0.34
0.54
-0.19
105
0.0262
0.09
-0.19
-0.46
0.41
-0.18
110
0.0258
0.09
-0.18
-0.59
0.30
-0.16
115
0.0229
0.08
-0.16
-0.71
0.21
-0.14
120
0.0186
0.06
-0.14
-0.80
0.14
-0.11
125
0.0144
0.05
-0.11
-0.86
0.10
-0.08
130
0.0107
0.04
-0.08
-0.91
0.05
-0.05
140
0.0057
0.02
-0.05
-0.96
0.03
-0.04
145
0.0042
0.02
-0.04
-0.98
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.