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 — 600 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)DE 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 ≈ 43.8% · 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
0.64
-0.65
597.5
0.0068
0.48
-0.66
-0.37
0.62
-0.66
600
0.0069
0.49
-0.67
-0.39
0.60
-0.67
602.5
0.0070
0.50
-0.68
-0.40
0.58
-0.67
605
0.0071
0.50
-0.68
-0.42
0.57
-0.68
607.5
0.0072
0.51
-0.69
-0.44
0.55
-0.68
610
0.0072
0.51
-0.69
-0.46
0.53
-0.68
612.5
0.0073
0.51
-0.69
-0.48
0.51
-0.69
615
0.0073
0.51
-0.69
-0.49
0.49
-0.68
617.5
0.0073
0.51
-0.69
-0.51
0.48
-0.68
620
0.0073
0.51
-0.69
-0.53
0.46
-0.68
622.5
0.0073
0.51
-0.69
-0.55
0.44
-0.67
625
0.0073
0.51
-0.68
-0.57
0.40
-0.66
630
0.0072
0.50
-0.67
-0.60
0.37
-0.64
635
0.0070
0.48
-0.65
-0.64
0.34
-0.62
640
0.0068
0.47
-0.63
-0.67
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 55 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.