■ 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 — 340 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)AIT 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
0.96
-0.05
290
0.0018
0.09
-0.06
-0.04
0.95
-0.06
300
0.0026
0.12
-0.07
-0.05
0.93
-0.07
310
0.0036
0.15
-0.08
-0.07
0.89
-0.09
320
0.0052
0.20
-0.10
-0.10
0.84
-0.11
330
0.0074
0.25
-0.12
-0.15
0.77
-0.13
340
0.0104
0.32
-0.14
-0.23
0.66
-0.15
350
0.0137
0.39
-0.15
-0.34
0.51
-0.16
360
0.0156
0.42
-0.16
-0.49
0.36
-0.15
370
0.0147
0.40
-0.15
-0.65
0.16
-0.10
390
0.0087
0.26
-0.10
-0.85
0.11
-0.08
400
0.0062
0.20
-0.09
-0.91
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 11 strikes around the money — all 15 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.