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 — 33 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)ONON 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 ≈ 44.7% · 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
0.97
-0.01
29.5
0.0329
0.00
-0.01
-0.03
0.96
-0.02
30
0.0461
0.00
-0.02
-0.04
0.94
-0.03
30.5
0.0663
0.00
-0.03
-0.06
0.90
-0.03
31
0.0965
0.01
-0.04
-0.10
0.85
-0.05
31.5
0.1368
0.01
-0.05
-0.15
0.77
-0.06
32
0.1808
0.01
-0.07
-0.23
0.67
-0.08
32.5
0.2205
0.01
-0.08
-0.33
0.56
-0.08
33
0.2457
0.01
-0.09
-0.45
0.43
-0.08
33.5
0.2472
0.01
-0.08
-0.57
0.31
-0.07
34
0.2245
0.01
-0.07
-0.69
0.21
-0.06
34.5
0.1849
0.01
-0.06
-0.79
0.14
-0.04
35
0.1387
0.01
-0.04
-0.87
0.09
-0.03
35.5
0.0980
0.01
-0.03
-0.92
0.06
-0.02
36
0.0705
0.00
-0.02
-0.94
0.05
-0.02
36.5
0.0539
0.00
-0.02
-0.96
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 35 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.