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 — 230 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)ROST 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 ≈ 32.4% · 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
0.99
-0.02
210
0.0028
0.01
-0.02
-0.01
0.98
-0.04
212.5
0.0045
0.01
-0.04
-0.02
0.97
-0.06
215
0.0073
0.01
-0.06
-0.03
0.93
-0.15
220
0.0193
0.03
-0.15
-0.07
0.87
-0.23
222.5
0.0300
0.04
-0.24
-0.13
0.78
-0.34
225
0.0428
0.06
-0.35
-0.22
0.66
-0.45
227.5
0.0537
0.08
-0.45
-0.34
0.52
-0.49
230
0.0582
0.08
-0.50
-0.49
0.38
-0.47
232.5
0.0548
0.08
-0.48
-0.63
0.26
-0.39
235
0.0456
0.07
-0.39
-0.75
0.16
-0.28
237.5
0.0342
0.05
-0.28
-0.85
0.10
-0.19
240
0.0236
0.04
-0.19
-0.91
0.06
-0.13
242.5
0.0159
0.03
-0.13
-0.95
0.04
-0.10
245
0.0113
0.02
-0.10
-0.96
0.04
-0.09
247.5
0.0085
0.02
-0.08
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 30 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.