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 — 205 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)CTAS 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 ≈ 28.0% · 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
0.97
-0.08
205
0.0063
0.02
-0.08
-0.03
0.94
-0.11
210
0.0113
0.03
-0.12
-0.06
0.93
-0.14
212.5
0.0157
0.03
-0.14
-0.07
0.90
-0.17
215
0.0221
0.04
-0.17
-0.10
0.85
-0.21
217.5
0.0316
0.06
-0.21
-0.15
0.77
-0.25
220
0.0447
0.07
-0.26
-0.23
0.65
-0.30
222.5
0.0584
0.09
-0.30
-0.35
0.50
-0.32
225
0.0636
0.10
-0.33
-0.51
0.35
-0.32
227.5
0.0561
0.09
-0.32
-0.65
0.25
-0.29
230
0.0438
0.08
-0.29
-0.76
0.18
-0.25
232.5
0.0329
0.06
-0.25
-0.83
0.13
-0.22
235
0.0247
0.05
-0.22
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 12 strikes around the money — all 37 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.