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 — 322.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)CDNS 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 ≈ 69.5% · 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
0.80
-0.62
292.5
0.0088
0.12
-0.62
-0.20
0.78
-0.66
295
0.0095
0.13
-0.67
-0.22
0.73
-0.74
300
0.0108
0.15
-0.74
-0.27
0.67
-0.81
305
0.0119
0.16
-0.81
-0.33
0.61
-0.85
310
0.0127
0.17
-0.85
-0.39
0.58
-0.87
312.5
0.0130
0.17
-0.87
-0.42
0.54
-0.88
315
0.0132
0.17
-0.88
-0.46
0.51
-0.88
317.5
0.0133
0.17
-0.88
-0.49
0.48
-0.88
320
0.0133
0.17
-0.88
-0.52
0.44
-0.87
322.5
0.0132
0.17
-0.87
-0.56
0.41
-0.85
325
0.0130
0.17
-0.85
-0.59
0.38
-0.83
327.5
0.0127
0.17
-0.83
-0.62
0.35
-0.81
330
0.0124
0.16
-0.81
-0.65
0.32
-0.78
332.5
0.0120
0.16
-0.78
-0.68
0.29
-0.75
335
0.0115
0.15
-0.75
-0.71
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.