■ 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 — 7480 — is the max pain price.
Open interest by strike · Mon, Aug 3
■ calls (up)■ puts (down)SPX open contracts per strike for Mon, Aug 3.
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 · Mon, Aug 3
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Mon, Aug 3
— call IV— put IVATM ≈ 16.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Mon, Aug 3
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, Aug 3
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-3.63
7240
0.0012
2.19
-3.66
-0.15
0.84
-3.80
7250
0.0013
2.29
-3.82
-0.16
0.82
-4.12
7270
0.0015
2.50
-4.14
-0.18
0.78
-4.60
7300
0.0017
2.82
-4.62
-0.22
0.69
-5.26
7350
0.0021
3.31
-5.27
-0.31
0.64
-5.47
7375
0.0023
3.50
-5.48
-0.36
0.58
-5.56
7400
0.0025
3.65
-5.57
-0.42
0.52
-5.50
7425
0.0026
3.71
-5.50
-0.48
0.48
-5.38
7440
0.0027
3.71
-5.38
-0.52
0.45
-5.26
7450
0.0027
3.69
-5.26
-0.55
0.44
-5.19
7455
0.0027
3.67
-5.19
-0.56
0.41
-5.03
7465
0.0027
3.63
-5.03
-0.59
0.38
-4.84
7475
0.0027
3.56
-4.83
-0.62
0.36
-4.73
7480
0.0027
3.52
-4.72
-0.64
0.31
-4.22
7500
0.0026
3.30
-4.21
-0.69
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.