Event risk before this expiration:FOMC decision Wed, Oct 28 — 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 — 897.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)GS open contracts per strike for Fri, Oct 30.
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 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 36.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.74
-0.98
860
0.0066
0.43
-1.00
-0.26
0.71
-1.05
865
0.0070
0.45
-1.07
-0.29
0.67
-1.10
870
0.0074
0.48
-1.12
-0.33
0.64
-1.15
875
0.0078
0.50
-1.16
-0.37
0.60
-1.18
880
0.0081
0.51
-1.19
-0.41
0.56
-1.20
885
0.0083
0.52
-1.21
-0.45
0.54
-1.20
887.5
0.0084
0.53
-1.21
-0.47
0.51
-1.20
890
0.0084
0.53
-1.21
-0.49
0.49
-1.20
892.5
0.0085
0.53
-1.21
-0.51
0.47
-1.19
895
0.0085
0.53
-1.20
-0.53
0.45
-1.18
897.5
0.0085
0.52
-1.19
-0.56
0.43
-1.17
900
0.0084
0.52
-1.17
-0.58
0.41
-1.15
902.5
0.0084
0.51
-1.16
-0.60
0.39
-1.13
905
0.0083
0.51
-1.13
-0.62
0.37
-1.10
907.5
0.0081
0.50
-1.11
-0.64
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.