■ 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 — 759 — is the max pain price.
Open interest by strike · Mon, Sep 14
■ calls (up)■ puts (down)SPY open contracts per strike for Mon, Sep 14.
Open-interest change · 2026-09-10 → 2026-09-11
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. Biggest moves: 745 +10K · 700 −4K · 730 +4K · 767 +3K
Volume by strike · Mon, Sep 14
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Mon, Sep 14
— call IV— put IVATM ≈ 7.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Mon, Sep 14
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, Sep 14
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.87
-0.21
757
0.0316
0.15
-0.21
-0.13
0.85
-0.24
758
0.0372
0.17
-0.24
-0.15
0.82
-0.27
759
0.0437
0.19
-0.27
-0.18
0.78
-0.29
760
0.0509
0.21
-0.30
-0.22
0.73
-0.32
761
0.0588
0.23
-0.33
-0.27
0.68
-0.34
762
0.0670
0.25
-0.35
-0.33
0.61
-0.35
763
0.0745
0.27
-0.36
-0.39
0.54
-0.36
764
0.0803
0.28
-0.36
-0.47
0.46
-0.34
765
0.0829
0.28
-0.35
-0.55
0.37
-0.32
766
0.0811
0.26
-0.32
-0.64
0.29
-0.28
767
0.0749
0.24
-0.28
-0.72
0.22
-0.22
768
0.0652
0.21
-0.22
-0.79
0.15
-0.17
769
0.0535
0.18
-0.17
-0.86
0.10
-0.12
770
0.0413
0.14
-0.12
-0.91
0.07
-0.09
771
0.0305
0.11
-0.08
-0.94
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.