Event risk before this expiration: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 — 380 — is the max pain price.
Open interest by strike · Mon, Oct 19
■ calls (up)■ puts (down)GLD open contracts per strike for Mon, Oct 19.
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 · Mon, Oct 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Mon, Oct 19
— call IV— put IVATM ≈ 19.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Mon, Oct 19
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 · Mon, Oct 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.93
-0.08
355
0.0087
0.10
-0.08
-0.07
0.89
-0.11
360
0.0133
0.14
-0.12
-0.12
0.81
-0.15
365
0.0193
0.19
-0.16
-0.19
0.70
-0.20
370
0.0255
0.24
-0.20
-0.30
0.57
-0.22
375
0.0297
0.27
-0.22
-0.44
0.54
-0.22
376
0.0301
0.27
-0.23
-0.47
0.51
-0.22
377
0.0302
0.27
-0.23
-0.50
0.48
-0.22
378
0.0303
0.27
-0.23
-0.53
0.45
-0.22
379
0.0301
0.27
-0.22
-0.56
0.42
-0.22
380
0.0297
0.27
-0.22
-0.59
0.39
-0.21
381
0.0292
0.26
-0.22
-0.62
0.36
-0.21
382
0.0285
0.26
-0.21
-0.65
0.33
-0.20
383
0.0276
0.25
-0.20
-0.68
0.28
-0.18
385
0.0255
0.23
-0.19
-0.73
0.26
-0.18
386
0.0243
0.22
-0.18
-0.76
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 47 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.