Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 — 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 — 37 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)NKE open contracts per strike for Fri, Oct 23.
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, Oct 23
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 23
— call IV— put IVATM ≈ 44.6% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 23
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, Oct 23
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.01
29
0.0249
0.01
-0.01
-0.07
0.90
-0.01
30
0.0343
0.02
-0.01
-0.10
0.86
-0.02
31
0.0448
0.03
-0.02
-0.15
0.80
-0.02
32
0.0553
0.03
-0.02
-0.20
0.73
-0.02
33
0.0650
0.04
-0.02
-0.27
0.66
-0.03
34
0.0729
0.04
-0.03
-0.34
0.58
-0.03
35
0.0780
0.04
-0.03
-0.42
0.51
-0.03
36
0.0798
0.04
-0.03
-0.50
0.43
-0.03
37
0.0784
0.04
-0.03
-0.58
0.36
-0.03
38
0.0743
0.04
-0.03
-0.65
0.29
-0.03
39
0.0681
0.04
-0.03
-0.72
0.24
-0.02
40
0.0607
0.03
-0.02
-0.78
0.19
-0.02
41
0.0528
0.03
-0.02
-0.83
0.15
-0.02
42
0.0449
0.03
-0.02
-0.87
0.12
-0.01
43
0.0378
0.02
-0.02
-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 25 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.