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 — 27 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)CCL 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 ≈ 42.0% · 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
0.95
-0.02
25.5
0.1189
0.01
-0.01
-0.08
0.90
-0.01
26
0.1146
0.01
-0.01
-0.11
0.85
-0.02
26.5
0.1007
0.01
-0.02
-0.16
0.79
-0.02
27
0.1239
0.02
-0.02
-0.21
0.72
-0.03
27.5
0.1444
0.02
-0.03
-0.29
0.64
-0.03
28
0.1593
0.02
-0.03
-0.36
0.56
-0.03
28.5
0.1673
0.02
-0.03
-0.45
0.47
-0.03
29
0.1678
0.02
-0.03
-0.53
0.39
-0.03
29.5
0.1613
0.02
-0.03
-0.61
0.32
-0.03
30
0.1489
0.02
-0.03
-0.69
0.25
-0.03
30.5
0.1325
0.02
-0.03
-0.76
0.20
-0.02
31
0.1140
0.02
-0.02
-0.81
0.15
-0.02
31.5
0.0954
0.01
-0.02
-0.86
0.12
-0.02
32
0.0781
0.01
-0.01
-0.90
0.07
-0.01
33
0.0513
0.01
-0.01
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 35 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.