■ 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 — 7675 — is the max pain price.
Open interest by strike · Thu, Sep 17
■ calls (up)■ puts (down)SPX open contracts per strike for Thu, Sep 17.
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: 7075 +3K · 7250 +881 · 7350 +798 · 7460 +697
Volume by strike · Thu, Sep 17
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Thu, Sep 17
— call IV— put IVATM ≈ 11.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Thu, Sep 17
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 · Thu, Sep 17
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.78
-3.46
7550
0.0021
2.92
-3.46
-0.22
0.74
-3.72
7575
0.0024
3.23
-3.72
-0.26
0.73
-3.77
7580
0.0025
3.30
-3.77
-0.27
0.69
-3.90
7595
0.0027
3.48
-3.90
-0.31
0.68
-3.93
7600
0.0028
3.53
-3.93
-0.32
0.65
-3.99
7610
0.0030
3.63
-3.99
-0.35
0.61
-4.05
7625
0.0032
3.77
-4.05
-0.39
0.53
-4.01
7650
0.0034
3.90
-4.01
-0.47
0.46
-3.86
7670
0.0036
3.89
-3.86
-0.54
0.44
-3.80
7675
0.0036
3.87
-3.80
-0.56
0.42
-3.73
7680
0.0036
3.84
-3.73
-0.58
0.39
-3.57
7690
0.0036
3.76
-3.57
-0.61
0.35
-3.39
7700
0.0035
3.65
-3.39
-0.65
0.33
-3.29
7705
0.0034
3.58
-3.29
-0.67
0.26
-2.82
7725
0.0032
3.23
-2.82
-0.74
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.