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 — 398 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)GLD open contracts per strike for Fri, Oct 16.
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 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 16
— call IV— put IVATM ≈ 20.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 16
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 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.09
355
0.0081
0.07
-0.09
-0.06
0.90
-0.13
360
0.0129
0.11
-0.13
-0.10
0.83
-0.18
365
0.0196
0.15
-0.19
-0.17
0.81
-0.19
366
0.0212
0.16
-0.20
-0.19
0.77
-0.22
368
0.0242
0.18
-0.22
-0.24
0.72
-0.24
370
0.0271
0.20
-0.24
-0.29
0.57
-0.27
375
0.0321
0.23
-0.28
-0.44
0.41
-0.27
380
0.0320
0.23
-0.27
-0.60
0.34
-0.25
382
0.0303
0.22
-0.26
-0.67
0.26
-0.22
385
0.0266
0.19
-0.23
-0.75
0.16
-0.16
390
0.0191
0.14
-0.17
-0.86
0.09
-0.11
395
0.0125
0.10
-0.12
-0.93
0.07
-0.10
397
0.0104
0.08
-0.11
-0.95
0.06
-0.08
399
0.0086
0.07
-0.09
-0.96
0.05
-0.07
400
0.0078
0.07
-0.08
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.