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 — 220 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)ZS 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 ≈ 70.0% · 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
-0.55
242.5
0.0126
0.05
-0.56
-0.13
0.84
-0.67
245
0.0149
0.06
-0.67
-0.16
0.79
-0.79
247.5
0.0172
0.07
-0.80
-0.21
0.75
-0.91
250
0.0194
0.08
-0.91
-0.25
0.69
-1.02
252.5
0.0213
0.08
-1.02
-0.31
0.64
-1.10
255
0.0228
0.09
-1.11
-0.36
0.58
-1.16
257.5
0.0238
0.09
-1.17
-0.42
0.52
-1.19
260
0.0242
0.09
-1.20
-0.48
0.46
-1.18
262.5
0.0241
0.09
-1.19
-0.54
0.40
-1.15
265
0.0234
0.09
-1.16
-0.60
0.35
-1.09
267.5
0.0222
0.09
-1.09
-0.66
0.29
-1.00
270
0.0207
0.08
-1.01
-0.71
0.21
-0.80
275
0.0170
0.07
-0.81
-0.80
0.17
-0.70
277.5
0.0150
0.06
-0.70
-0.83
0.14
-0.60
280
0.0131
0.05
-0.60
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 50 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.