■ 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 — 17 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)PPLT 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 ≈ 36.1% · 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
0.95
-0.00
11.5
0.0354
0.01
-0.00
-0.05
0.93
-0.00
12
0.0459
0.01
-0.01
-0.07
0.88
-0.01
13
0.0781
0.01
-0.01
-0.11
0.85
-0.01
13.5
0.1021
0.01
-0.01
-0.15
0.80
-0.01
14
0.1323
0.01
-0.01
-0.20
0.73
-0.01
14.5
0.1674
0.02
-0.01
-0.27
0.64
-0.01
15
0.2008
0.02
-0.01
-0.36
0.53
-0.01
15.5
0.2202
0.02
-0.01
-0.46
0.43
-0.01
16
0.2162
0.02
-0.01
-0.57
0.33
-0.01
16.5
0.1937
0.02
-0.01
-0.67
0.26
-0.01
17
0.1648
0.02
-0.01
-0.74
0.21
-0.01
17.5
0.1374
0.01
-0.01
-0.79
0.17
-0.01
18
0.1142
0.01
-0.01
-0.83
0.14
-0.01
18.5
0.0954
0.01
-0.01
-0.86
0.12
-0.01
19
0.0804
0.01
-0.01
-0.88
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 45 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.