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 — 325 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)TER 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 ≈ 141.7% · 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
0.81
-1.55
275
0.0060
0.09
-1.56
-0.19
0.77
-1.74
280
0.0067
0.10
-1.75
-0.23
0.74
-1.91
285
0.0072
0.11
-1.91
-0.27
0.70
-2.06
290
0.0078
0.11
-2.06
-0.30
0.65
-2.18
295
0.0082
0.12
-2.19
-0.35
0.61
-2.27
300
0.0086
0.12
-2.28
-0.39
0.57
-2.33
305
0.0088
0.13
-2.34
-0.43
0.52
-2.36
310
0.0089
0.13
-2.37
-0.48
0.48
-2.35
315
0.0089
0.13
-2.36
-0.52
0.46
-2.34
317.5
0.0089
0.13
-2.35
-0.55
0.43
-2.32
320
0.0088
0.13
-2.33
-0.57
0.39
-2.25
325
0.0086
0.13
-2.25
-0.61
0.35
-2.15
330
0.0084
0.12
-2.16
-0.65
0.33
-2.10
332.5
0.0082
0.12
-2.10
-0.67
0.31
-2.04
335
0.0080
0.12
-2.04
-0.69
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 44 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.