■ 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 — 327.5 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)GOOGL 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 ≈ 40.3% · 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
0.90
-0.34
317.5
0.0131
0.05
-0.35
-0.10
0.87
-0.44
320
0.0166
0.07
-0.44
-0.13
0.82
-0.55
322.5
0.0203
0.08
-0.55
-0.18
0.77
-0.66
325
0.0242
0.09
-0.66
-0.23
0.70
-0.76
327.5
0.0276
0.10
-0.77
-0.30
0.63
-0.84
330
0.0304
0.12
-0.85
-0.37
0.55
-0.88
332.5
0.0320
0.12
-0.89
-0.45
0.47
-0.89
335
0.0324
0.12
-0.89
-0.53
0.39
-0.84
337.5
0.0314
0.12
-0.85
-0.61
0.32
-0.77
340
0.0292
0.11
-0.78
-0.69
0.25
-0.67
342.5
0.0260
0.10
-0.67
-0.76
0.19
-0.55
345
0.0223
0.08
-0.56
-0.81
0.14
-0.44
347.5
0.0184
0.07
-0.45
-0.86
0.11
-0.34
350
0.0148
0.06
-0.34
-0.90
0.08
-0.26
352.5
0.0116
0.04
-0.26
-0.93
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.