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 — 12 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)F open contracts per strike for Fri, Oct 30.
Open-interest change · 2026-10-26 → 2026-10-27
Net contracts opened (up, green) or closed (down, red) per strike since the previous snapshot: where the walls are building and where they’re unwinding. Only strikes observed on both days are compared; 1 strike was in only one day’s snapshot (each keeps its largest strikes) and is left out. Biggest moves: 12 +4K · 12.5 +3K · 11.5 +3K · 13 −2K
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 ≈ 86.0% · 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
1.00
-0.00
8
0.0047
0.00
-0.00
-0.00
1.00
-0.00
8.5
0.0096
0.00
-0.00
-0.01
0.99
-0.00
9
0.0195
0.00
-0.00
-0.01
0.98
-0.01
9.5
0.0399
0.00
-0.01
-0.02
0.96
-0.01
10
0.0815
0.00
-0.01
-0.04
0.91
-0.03
10.5
0.1616
0.00
-0.03
-0.09
0.81
-0.04
11
0.2918
0.00
-0.04
-0.20
0.63
-0.06
11.5
0.4251
0.00
-0.06
-0.38
0.41
-0.06
12
0.4396
0.00
-0.06
-0.60
0.23
-0.05
12.5
0.3292
0.00
-0.05
-0.78
0.12
-0.03
13
0.2072
0.00
-0.03
-0.89
0.07
-0.02
13.5
0.1237
0.00
-0.02
-0.94
0.04
-0.01
14
0.0741
0.00
-0.01
-0.97
0.02
-0.01
14.5
0.0455
0.00
-0.01
-0.99
0.01
-0.01
15
0.0289
0.00
-0.01
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 31 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 history — nearest expiry vs price
— max pain (nearest expiry)- - delayed closeOne point per snapshot day since 2026-07-28; unobserved days are gaps, not guesses.
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.