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 — 100 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)SE 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 ≈ 50.1% · 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
0.81
-0.09
87
0.0303
0.05
-0.09
-0.20
0.78
-0.10
88
0.0336
0.06
-0.10
-0.23
0.74
-0.10
89
0.0368
0.06
-0.10
-0.26
0.70
-0.11
90
0.0398
0.06
-0.11
-0.30
0.66
-0.11
91
0.0425
0.07
-0.12
-0.34
0.62
-0.12
92
0.0447
0.07
-0.12
-0.39
0.57
-0.12
93
0.0463
0.07
-0.12
-0.43
0.53
-0.12
94
0.0472
0.07
-0.12
-0.48
0.48
-0.12
95
0.0474
0.07
-0.12
-0.53
0.43
-0.12
96
0.0468
0.07
-0.12
-0.58
0.39
-0.12
97
0.0456
0.07
-0.12
-0.62
0.34
-0.11
98
0.0437
0.07
-0.11
-0.67
0.30
-0.11
99
0.0414
0.07
-0.11
-0.71
0.27
-0.10
100
0.0388
0.06
-0.10
-0.74
0.23
-0.09
101
0.0359
0.06
-0.10
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 48 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.