■ 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 — 14 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)F 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 ≈ 87.0% · 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
0.97
-0.01
12.5
0.0439
0.00
-0.01
-0.03
0.94
-0.02
13
0.0823
0.00
-0.02
-0.06
0.89
-0.04
13.5
0.1449
0.00
-0.04
-0.11
0.80
-0.06
14
0.2283
0.00
-0.06
-0.20
0.67
-0.08
14.5
0.3052
0.01
-0.08
-0.34
0.50
-0.09
15
0.3358
0.01
-0.09
-0.50
0.34
-0.08
15.5
0.3059
0.01
-0.08
-0.66
0.22
-0.06
16
0.2395
0.00
-0.06
-0.78
0.13
-0.04
16.5
0.1686
0.00
-0.04
-0.87
0.08
-0.03
17
0.1109
0.00
-0.03
-0.93
0.04
-0.02
17.5
0.0701
0.00
-0.02
-0.96
0.03
-0.01
18
0.0434
0.00
-0.01
-0.98
0.01
-0.01
18.5
0.0266
0.00
-0.01
-0.99
0.01
-0.00
19
0.0163
0.00
-0.00
-0.99
0.01
-0.00
19.5
0.0100
0.00
-0.00
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 32 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.