■ 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 — 80 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)BUD open contracts per strike for Fri, Aug 21.
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 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 20.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.02
72.5
0.0166
0.01
-0.02
-0.04
0.93
-0.03
75
0.0346
0.02
-0.03
-0.07
0.91
-0.03
76
0.0480
0.02
-0.04
-0.09
0.87
-0.04
77
0.0676
0.03
-0.04
-0.13
0.84
-0.04
77.5
0.0806
0.03
-0.04
-0.16
0.81
-0.05
78
0.0961
0.03
-0.05
-0.19
0.71
-0.05
79
0.1332
0.04
-0.06
-0.29
0.57
-0.06
80
0.1668
0.05
-0.06
-0.43
0.40
-0.06
81
0.1680
0.05
-0.06
-0.60
0.26
-0.05
82
0.1346
0.04
-0.05
-0.75
0.21
-0.04
82.5
0.1146
0.04
-0.04
-0.80
0.17
-0.04
83
0.0962
0.03
-0.04
-0.84
0.11
-0.03
84
0.0670
0.02
-0.03
-0.90
0.08
-0.03
85
0.0471
0.02
-0.03
-0.93
0.06
-0.02
86
0.0338
0.01
-0.02
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 31 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.