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 — 285 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)CI 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 ≈ 32.7% · 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
0.92
-0.19
290
0.0115
0.05
-0.20
-0.08
0.90
-0.24
292.5
0.0150
0.06
-0.25
-0.10
0.86
-0.30
295
0.0192
0.07
-0.30
-0.14
0.81
-0.36
297.5
0.0241
0.09
-0.36
-0.19
0.75
-0.42
300
0.0293
0.10
-0.43
-0.25
0.68
-0.47
302.5
0.0342
0.12
-0.48
-0.33
0.59
-0.51
305
0.0376
0.13
-0.52
-0.42
0.49
-0.52
307.5
0.0386
0.13
-0.54
-0.52
0.40
-0.51
310
0.0371
0.13
-0.52
-0.61
0.31
-0.47
312.5
0.0336
0.12
-0.47
-0.70
0.24
-0.41
315
0.0289
0.10
-0.42
-0.77
0.19
-0.36
317.5
0.0240
0.09
-0.36
-0.83
0.14
-0.30
320
0.0195
0.07
-0.30
-0.87
0.11
-0.25
322.5
0.0156
0.06
-0.25
-0.91
0.08
-0.21
325
0.0124
0.05
-0.20
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 38 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.