■ 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 — 325 — is the max pain price.
Open interest by strike · Wed, Jul 29
■ calls (up)■ puts (down)GOOGL open contracts per strike for Wed, Jul 29.
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 · Wed, Jul 29
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Wed, Jul 29
— call IV— put IVATM ≈ 38.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Wed, Jul 29
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 · Wed, Jul 29
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.98
-0.05
317.5
0.0058
0.01
-0.06
-0.02
0.96
-0.10
320
0.0098
0.01
-0.10
-0.04
0.94
-0.20
322.5
0.0164
0.02
-0.20
-0.06
0.89
-0.39
325
0.0259
0.03
-0.39
-0.11
0.81
-0.73
327.5
0.0376
0.05
-0.73
-0.19
0.71
-1.30
330
0.0490
0.06
-1.30
-0.29
0.57
-2.12
332.5
0.0565
0.07
-2.12
-0.42
0.43
-2.10
335
0.0571
0.07
-2.10
-0.57
0.30
-1.28
337.5
0.0503
0.06
-1.28
-0.70
0.19
-0.71
340
0.0389
0.05
-0.71
-0.81
0.11
-0.38
342.5
0.0271
0.03
-0.39
-0.89
0.07
-0.21
345
0.0177
0.02
-0.22
-0.94
0.04
-0.12
347.5
0.0112
0.01
-0.13
-0.96
0.03
-0.07
350
0.0072
0.01
-0.09
-0.98
0.02
-0.05
352.5
0.0048
0.01
-0.07
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 42 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.