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 — 45 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)NKE 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 ≈ 35.4% · 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
0.87
-0.02
39
0.0624
0.02
-0.02
-0.13
0.84
-0.03
39.5
0.0739
0.02
-0.03
-0.16
0.80
-0.03
40
0.0859
0.03
-0.03
-0.20
0.75
-0.03
40.5
0.0975
0.03
-0.03
-0.25
0.70
-0.04
41
0.1080
0.03
-0.04
-0.30
0.64
-0.04
41.5
0.1166
0.03
-0.04
-0.36
0.58
-0.04
42
0.1225
0.04
-0.04
-0.42
0.52
-0.04
42.5
0.1253
0.04
-0.04
-0.48
0.46
-0.04
43
0.1249
0.04
-0.04
-0.55
0.40
-0.04
43.5
0.1214
0.03
-0.04
-0.61
0.34
-0.04
44
0.1152
0.03
-0.04
-0.67
0.29
-0.03
44.5
0.1070
0.03
-0.03
-0.72
0.24
-0.03
45
0.0972
0.03
-0.03
-0.77
0.20
-0.03
45.5
0.0866
0.03
-0.03
-0.81
0.16
-0.02
46
0.0758
0.02
-0.02
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 43 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.