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 — 135 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)WPM 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 ≈ 40.5% · 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
0.76
-0.12
128
0.0242
0.09
-0.12
-0.24
0.73
-0.12
129
0.0256
0.10
-0.12
-0.27
0.71
-0.13
130
0.0270
0.10
-0.13
-0.29
0.68
-0.13
131
0.0283
0.10
-0.13
-0.32
0.62
-0.14
133
0.0303
0.11
-0.14
-0.38
0.59
-0.14
134
0.0310
0.11
-0.14
-0.41
0.56
-0.15
135
0.0315
0.12
-0.15
-0.44
0.53
-0.15
136
0.0318
0.12
-0.15
-0.48
0.49
-0.15
137
0.0318
0.12
-0.15
-0.51
0.46
-0.15
138
0.0316
0.12
-0.15
-0.54
0.43
-0.15
139
0.0312
0.12
-0.15
-0.57
0.40
-0.14
140
0.0307
0.11
-0.14
-0.60
0.37
-0.14
141
0.0299
0.11
-0.14
-0.63
0.35
-0.14
142
0.0290
0.11
-0.14
-0.66
0.32
-0.13
143
0.0280
0.10
-0.14
-0.68
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 46 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.