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 — 115 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)COP 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 ≈ 34.7% · 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
0.83
-0.07
108
0.0322
0.06
-0.08
-0.21
0.79
-0.08
109
0.0361
0.07
-0.09
-0.25
0.75
-0.09
110
0.0399
0.07
-0.09
-0.29
0.71
-0.10
111
0.0433
0.08
-0.10
-0.33
0.67
-0.10
112
0.0461
0.09
-0.10
-0.37
0.62
-0.11
113
0.0483
0.09
-0.10
-0.42
0.57
-0.11
114
0.0496
0.09
-0.11
-0.47
0.52
-0.11
115
0.0502
0.09
-0.11
-0.51
0.47
-0.11
116
0.0498
0.09
-0.10
-0.56
0.42
-0.11
117
0.0487
0.09
-0.10
-0.61
0.37
-0.11
118
0.0469
0.09
-0.10
-0.65
0.33
-0.10
119
0.0445
0.09
-0.09
-0.69
0.29
-0.10
120
0.0417
0.08
-0.09
-0.73
0.25
-0.09
121
0.0386
0.08
-0.08
-0.76
0.22
-0.08
122
0.0354
0.07
-0.08
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 59 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.