■ 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 — 760 — is the max pain price.
Open interest by strike · Tue, Sep 15
■ calls (up)■ puts (down)SPY open contracts per strike for Tue, Sep 15.
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: 742 +15K · 670 +8K · 675 +6K · 755 −5K
Volume by strike · Tue, Sep 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Tue, Sep 15
— call IV— put IVATM ≈ 8.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Tue, Sep 15
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 · Tue, Sep 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.81
-0.28
757
0.0315
0.22
-0.29
-0.19
0.79
-0.30
758
0.0352
0.24
-0.30
-0.21
0.76
-0.32
759
0.0392
0.26
-0.32
-0.24
0.72
-0.34
760
0.0434
0.27
-0.34
-0.28
0.68
-0.35
761
0.0476
0.29
-0.35
-0.32
0.64
-0.36
762
0.0517
0.30
-0.36
-0.37
0.59
-0.36
763
0.0554
0.31
-0.37
-0.42
0.53
-0.36
764
0.0584
0.32
-0.37
-0.47
0.47
-0.35
765
0.0602
0.32
-0.36
-0.53
0.41
-0.33
766
0.0605
0.31
-0.34
-0.60
0.35
-0.30
767
0.0589
0.30
-0.31
-0.66
0.29
-0.27
768
0.0555
0.28
-0.28
-0.72
0.23
-0.23
769
0.0504
0.25
-0.24
-0.78
0.18
-0.20
770
0.0442
0.22
-0.20
-0.83
0.10
-0.12
772
0.0306
0.16
-0.12
-0.91
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.