■ 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 — 110 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)INBX 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 ≈ 127.4% · 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
0.91
-0.30
65
0.0046
0.03
-0.30
-0.09
0.89
-0.32
70
0.0060
0.03
-0.33
-0.11
0.86
-0.34
75
0.0077
0.03
-0.35
-0.14
0.83
-0.36
80
0.0101
0.04
-0.37
-0.17
0.78
-0.39
85
0.0130
0.05
-0.39
-0.23
0.70
-0.41
90
0.0164
0.05
-0.41
-0.30
0.61
-0.44
95
0.0191
0.06
-0.44
-0.39
0.52
-0.46
100
0.0198
0.06
-0.46
-0.49
0.43
-0.47
105
0.0186
0.06
-0.47
-0.57
0.36
-0.48
110
0.0166
0.06
-0.48
-0.64
0.31
-0.48
115
0.0146
0.06
-0.48
-0.69
0.27
-0.48
120
0.0128
0.05
-0.48
-0.73
0.24
-0.47
125
0.0113
0.05
-0.47
-0.76
0.22
-0.47
130
0.0101
0.04
-0.47
-0.79
0.20
-0.46
135
0.0091
0.04
-0.46
-0.81
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 35 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.