Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 · 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 — 255 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)MCD 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 ≈ 21.7% · 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
0.97
-0.02
215
0.0036
0.07
-0.02
-0.03
0.95
-0.03
220
0.0053
0.09
-0.03
-0.05
0.92
-0.03
225
0.0079
0.13
-0.04
-0.08
0.87
-0.05
230
0.0112
0.18
-0.05
-0.13
0.80
-0.06
235
0.0149
0.24
-0.06
-0.20
0.72
-0.07
240
0.0184
0.29
-0.08
-0.29
0.62
-0.08
245
0.0209
0.32
-0.09
-0.39
0.51
-0.09
250
0.0220
0.34
-0.09
-0.50
0.40
-0.08
255
0.0214
0.33
-0.09
-0.62
0.31
-0.07
260
0.0193
0.30
-0.08
-0.72
0.22
-0.06
265
0.0163
0.25
-0.07
-0.81
0.16
-0.05
270
0.0130
0.21
-0.06
-0.89
0.11
-0.04
275
0.0099
0.16
-0.05
-0.94
0.07
-0.03
280
0.0073
0.12
-0.03
-0.97
0.05
-0.02
285
0.0053
0.09
-0.01
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.