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 — 202.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)TEAM 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 ≈ 66.9% · 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
0.83
-0.36
210
0.0125
0.08
-0.37
-0.17
0.80
-0.41
212.5
0.0141
0.09
-0.41
-0.20
0.76
-0.45
215
0.0156
0.10
-0.46
-0.24
0.71
-0.49
217.5
0.0170
0.11
-0.49
-0.29
0.67
-0.53
220
0.0182
0.11
-0.53
-0.33
0.62
-0.55
222.5
0.0191
0.12
-0.56
-0.38
0.57
-0.57
225
0.0198
0.12
-0.57
-0.43
0.52
-0.58
227.5
0.0202
0.13
-0.58
-0.48
0.47
-0.58
230
0.0202
0.13
-0.58
-0.53
0.42
-0.56
232.5
0.0199
0.12
-0.57
-0.58
0.38
-0.54
235
0.0194
0.12
-0.55
-0.63
0.33
-0.51
237.5
0.0185
0.11
-0.52
-0.67
0.28
-0.48
240
0.0174
0.11
-0.48
-0.72
0.24
-0.44
242.5
0.0162
0.10
-0.44
-0.76
0.21
-0.40
245
0.0148
0.09
-0.40
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 54 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.