■ 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 — 7490 — is the max pain price.
Open interest by strike · Fri, Aug 7
■ calls (up)■ puts (down)SPX open contracts per strike for Fri, Aug 7.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Aug 7
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 7
— call IV— put IVATM ≈ 16.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 7
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, Aug 7
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.73
-3.89
7300
0.0014
4.05
-3.91
-0.27
0.72
-3.92
7305
0.0015
4.09
-3.94
-0.28
0.66
-4.14
7350
0.0017
4.47
-4.15
-0.34
0.63
-4.18
7365
0.0018
4.58
-4.19
-0.37
0.63
-4.19
7370
0.0018
4.61
-4.20
-0.37
0.57
-4.21
7400
0.0019
4.76
-4.21
-0.43
0.54
-4.16
7420
0.0020
4.82
-4.17
-0.47
0.53
-4.15
7425
0.0020
4.83
-4.15
-0.47
0.47
-4.02
7450
0.0021
4.83
-4.01
-0.53
0.45
-3.94
7460
0.0021
4.81
-3.94
-0.55
0.42
-3.81
7475
0.0021
4.75
-3.80
-0.58
0.36
-3.52
7500
0.0021
4.58
-3.51
-0.64
0.31
-3.16
7525
0.0020
4.30
-3.15
-0.69
0.27
-2.92
7540
0.0020
4.08
-2.91
-0.73
0.25
-2.75
7550
0.0019
3.92
-2.73
-0.75
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
History starts accruing now: first snapshot taken 2026-07-28. We chart only days we actually observed — check back as the record builds. The measured hit-rate across all tickers lives on the accuracy ledger.
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.