■ 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 — 767 — is the max pain price.
Open interest by strike · Mon, Nov 2
■ calls (up)■ puts (down)SPY open contracts per strike for Mon, Nov 2.
Open-interest change · 2026-10-27 → 2026-10-28
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; 16 strikes were in only one day’s snapshot (each keeps its largest strikes) and are left out. Biggest moves: 750 +2K · 769 +829 · 765 −808 · 695 +729
Volume by strike · Mon, Nov 2
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Mon, Nov 2
— call IV— put IVATM ≈ 11.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Mon, Nov 2
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 · Mon, Nov 2
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.74
-0.39
765
0.0278
0.30
-0.39
-0.27
0.71
-0.40
766
0.0295
0.31
-0.41
-0.29
0.68
-0.42
767
0.0312
0.33
-0.42
-0.32
0.65
-0.43
768
0.0328
0.34
-0.43
-0.35
0.62
-0.44
769
0.0342
0.35
-0.44
-0.38
0.59
-0.44
770
0.0355
0.35
-0.45
-0.42
0.55
-0.44
771
0.0365
0.36
-0.45
-0.45
0.51
-0.44
772
0.0373
0.36
-0.44
-0.49
0.48
-0.43
773
0.0378
0.36
-0.44
-0.53
0.44
-0.42
774
0.0379
0.36
-0.43
-0.56
0.40
-0.41
775
0.0377
0.35
-0.41
-0.60
0.36
-0.39
776
0.0370
0.34
-0.40
-0.65
0.21
-0.28
780
0.0304
0.27
-0.31
-0.80
0.18
-0.25
781
0.0280
0.25
-0.28
-0.83
0.13
-0.19
783
0.0226
0.20
-0.22
-0.90
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.