■ 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 — 140 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)PEP 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 ≈ 24.8% · 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
0.99
-0.00
105
0.0012
0.01
-0.01
-0.01
0.99
-0.01
110
0.0020
0.01
-0.01
-0.02
0.98
-0.01
115
0.0037
0.02
-0.01
-0.04
0.96
-0.01
120
0.0074
0.05
-0.02
-0.07
0.91
-0.02
125
0.0142
0.09
-0.03
-0.13
0.81
-0.04
130
0.0234
0.14
-0.04
-0.24
0.67
-0.05
135
0.0313
0.18
-0.05
-0.38
0.50
-0.05
140
0.0341
0.20
-0.05
-0.54
0.34
-0.05
145
0.0307
0.18
-0.05
-0.68
0.22
-0.04
150
0.0238
0.15
-0.04
-0.80
0.13
-0.03
155
0.0167
0.11
-0.03
-0.88
0.08
-0.02
160
0.0112
0.08
-0.02
-0.93
0.05
-0.02
165
0.0076
0.06
-0.01
-0.95
0.04
-0.01
170
0.0053
0.04
-0.01
-0.97
0.03
-0.01
175
0.0038
0.03
-0.01
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 30 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.