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 — 185 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)DASH 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 ≈ 53.4% · 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
0.91
-0.15
162.5
0.0119
0.04
-0.15
-0.09
0.87
-0.20
165
0.0153
0.05
-0.20
-0.13
0.83
-0.25
167.5
0.0188
0.06
-0.25
-0.17
0.77
-0.30
170
0.0221
0.07
-0.30
-0.23
0.71
-0.34
172.5
0.0252
0.09
-0.34
-0.29
0.65
-0.36
175
0.0278
0.09
-0.37
-0.36
0.57
-0.38
177.5
0.0296
0.10
-0.39
-0.43
0.50
-0.39
180
0.0303
0.10
-0.39
-0.51
0.42
-0.38
182.5
0.0298
0.10
-0.38
-0.58
0.35
-0.35
185
0.0284
0.09
-0.36
-0.65
0.28
-0.32
187.5
0.0262
0.08
-0.32
-0.72
0.22
-0.27
190
0.0233
0.07
-0.28
-0.78
0.17
-0.22
192.5
0.0199
0.06
-0.23
-0.84
0.12
-0.18
195
0.0163
0.05
-0.18
-0.88
0.09
-0.13
197.5
0.0129
0.04
-0.13
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 49 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.