■ 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 — 123 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)USO open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 48.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.84
-0.06
115
0.0137
0.09
-0.07
-0.16
0.81
-0.07
117
0.0154
0.11
-0.07
-0.19
0.79
-0.08
118
0.0162
0.11
-0.08
-0.21
0.75
-0.09
120
0.0177
0.12
-0.09
-0.25
0.64
-0.10
125
0.0204
0.14
-0.10
-0.35
0.62
-0.11
126
0.0207
0.15
-0.11
-0.38
0.58
-0.11
128
0.0211
0.15
-0.11
-0.42
0.54
-0.12
130
0.0212
0.15
-0.12
-0.46
0.49
-0.12
132
0.0210
0.15
-0.12
-0.50
0.47
-0.12
133
0.0208
0.15
-0.12
-0.52
0.46
-0.12
134
0.0206
0.15
-0.12
-0.54
0.44
-0.12
135
0.0203
0.15
-0.12
-0.56
0.42
-0.12
136
0.0200
0.15
-0.12
-0.58
0.35
-0.12
140
0.0184
0.14
-0.12
-0.65
0.34
-0.11
141
0.0180
0.14
-0.11
-0.66
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.