Event risk before this expiration:Jobs report Fri, Aug 7 · CPI release Wed, Aug 12 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 850 — is the max pain price.
Open interest by strike · Fri, Aug 14
■ calls (up)■ puts (down)CAT open contracts per strike for Fri, Aug 14.
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, Aug 14
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 14
— call IV— put IVATM ≈ 41.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 14
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, Aug 14
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.77
-1.04
820
0.0054
0.39
-1.06
-0.23
0.74
-1.12
825
0.0058
0.41
-1.14
-0.26
0.71
-1.19
830
0.0062
0.43
-1.21
-0.29
0.68
-1.25
835
0.0065
0.46
-1.27
-0.32
0.65
-1.30
840
0.0067
0.47
-1.32
-0.36
0.58
-1.37
850
0.0071
0.50
-1.39
-0.43
0.54
-1.39
855
0.0072
0.51
-1.40
-0.46
0.47
-1.39
865
0.0073
0.51
-1.40
-0.54
0.43
-1.37
870
0.0072
0.50
-1.38
-0.57
0.40
-1.34
875
0.0070
0.49
-1.35
-0.61
0.36
-1.30
880
0.0069
0.48
-1.30
-0.64
0.31
-1.22
887.5
0.0065
0.45
-1.22
-0.69
0.30
-1.19
890
0.0064
0.44
-1.19
-0.71
0.27
-1.13
895
0.0060
0.42
-1.13
-0.74
0.24
-1.06
900
0.0057
0.40
-1.06
-0.77
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 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.