■ 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 — 320 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)AAPL open contracts per strike for Fri, Jul 31.
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, Jul 31
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jul 31
— call IV— put IVATM ≈ 52.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jul 31
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, Jul 31
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.86
-0.59
322.5
0.0128
0.07
-0.59
-0.14
0.83
-0.70
325
0.0150
0.08
-0.70
-0.17
0.79
-0.81
327.5
0.0173
0.09
-0.81
-0.21
0.74
-0.92
330
0.0194
0.10
-0.93
-0.26
0.69
-1.02
332.5
0.0213
0.11
-1.03
-0.31
0.64
-1.10
335
0.0229
0.12
-1.11
-0.36
0.58
-1.15
337.5
0.0240
0.12
-1.16
-0.42
0.52
-1.17
340
0.0245
0.12
-1.18
-0.48
0.46
-1.16
342.5
0.0246
0.12
-1.17
-0.55
0.40
-1.11
345
0.0240
0.12
-1.12
-0.61
0.34
-1.03
347.5
0.0229
0.11
-1.04
-0.67
0.28
-0.93
350
0.0213
0.10
-0.93
-0.72
0.23
-0.81
352.5
0.0194
0.09
-0.81
-0.77
0.18
-0.68
355
0.0171
0.08
-0.69
-0.82
0.15
-0.56
357.5
0.0147
0.07
-0.56
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 57 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.