■ 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 — 150 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)SPCX 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 ≈ 63.8% · 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
0.93
-0.06
105
0.0044
0.05
-0.06
-0.07
0.91
-0.07
110
0.0060
0.07
-0.07
-0.09
0.87
-0.09
115
0.0078
0.09
-0.09
-0.13
0.82
-0.11
120
0.0099
0.10
-0.11
-0.18
0.76
-0.13
125
0.0119
0.13
-0.13
-0.24
0.69
-0.15
130
0.0136
0.14
-0.15
-0.31
0.62
-0.16
135
0.0148
0.15
-0.16
-0.38
0.54
-0.17
140
0.0154
0.16
-0.17
-0.46
0.47
-0.17
145
0.0153
0.16
-0.17
-0.54
0.40
-0.17
150
0.0148
0.15
-0.17
-0.61
0.33
-0.16
155
0.0138
0.15
-0.16
-0.67
0.28
-0.15
160
0.0126
0.14
-0.14
-0.73
0.23
-0.13
165
0.0112
0.12
-0.13
-0.78
0.19
-0.12
170
0.0099
0.11
-0.12
-0.82
0.15
-0.10
175
0.0086
0.10
-0.10
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 46 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.