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 — 950 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)COST 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 ≈ 22.8% · 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
0.74
-0.47
915
0.0069
0.64
-0.48
-0.26
0.71
-0.50
920
0.0074
0.68
-0.51
-0.29
0.67
-0.52
925
0.0078
0.72
-0.53
-0.33
0.63
-0.55
930
0.0082
0.75
-0.56
-0.37
0.59
-0.56
935
0.0085
0.77
-0.57
-0.42
0.55
-0.57
940
0.0086
0.78
-0.58
-0.46
0.52
-0.57
942.5
0.0087
0.79
-0.58
-0.48
0.46
-0.57
950
0.0087
0.78
-0.58
-0.55
0.44
-0.57
952.5
0.0086
0.78
-0.58
-0.57
0.42
-0.56
955
0.0085
0.77
-0.57
-0.59
0.38
-0.55
960
0.0083
0.75
-0.56
-0.63
0.34
-0.53
965
0.0079
0.72
-0.54
-0.67
0.30
-0.50
970
0.0075
0.69
-0.51
-0.71
0.27
-0.47
975
0.0071
0.65
-0.48
-0.75
0.23
-0.44
980
0.0066
0.61
-0.45
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.