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 — 530 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)MA 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 ≈ 22.5% · 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
0.76
-0.28
552.5
0.0109
0.38
-0.28
-0.24
0.73
-0.29
555
0.0116
0.40
-0.30
-0.27
0.67
-0.32
560
0.0129
0.43
-0.32
-0.33
0.64
-0.33
562.5
0.0135
0.45
-0.33
-0.36
0.60
-0.33
565
0.0139
0.46
-0.34
-0.40
0.57
-0.34
567.5
0.0142
0.47
-0.35
-0.44
0.53
-0.34
570
0.0144
0.47
-0.35
-0.47
0.46
-0.34
575
0.0144
0.47
-0.35
-0.55
0.39
-0.33
580
0.0139
0.46
-0.34
-0.62
0.33
-0.31
585
0.0130
0.43
-0.32
-0.68
0.27
-0.29
590
0.0117
0.40
-0.30
-0.74
0.22
-0.26
595
0.0104
0.36
-0.27
-0.79
0.18
-0.23
600
0.0090
0.32
-0.24
-0.83
0.14
-0.21
605
0.0076
0.28
-0.21
-0.87
0.12
-0.18
610
0.0064
0.24
-0.18
-0.90
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 56 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.