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 — 210 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)ACN 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 ≈ 41.6% · 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
0.87
-0.19
222.5
0.0123
0.08
-0.19
-0.13
0.84
-0.22
225
0.0146
0.09
-0.22
-0.16
0.80
-0.25
227.5
0.0170
0.10
-0.25
-0.20
0.76
-0.28
230
0.0194
0.12
-0.28
-0.24
0.70
-0.31
232.5
0.0215
0.13
-0.31
-0.29
0.65
-0.33
235
0.0234
0.14
-0.33
-0.35
0.59
-0.35
237.5
0.0247
0.15
-0.35
-0.41
0.53
-0.35
240
0.0253
0.15
-0.35
-0.47
0.46
-0.35
242.5
0.0253
0.15
-0.35
-0.54
0.40
-0.34
245
0.0246
0.15
-0.34
-0.60
0.34
-0.33
247.5
0.0233
0.14
-0.33
-0.66
0.29
-0.30
250
0.0216
0.13
-0.30
-0.71
0.24
-0.28
252.5
0.0196
0.12
-0.28
-0.76
0.20
-0.25
255
0.0174
0.11
-0.25
-0.80
0.17
-0.22
257.5
0.0152
0.09
-0.22
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 55 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.