■ 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 — 14 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)GRRR 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 ≈ 93.3% · 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
-0.01
9
0.0134
0.00
-0.01
-0.01
0.98
-0.01
10
0.0392
0.00
-0.01
-0.03
0.96
-0.02
10.5
0.0623
0.00
-0.02
-0.05
0.93
-0.03
11
0.0964
0.00
-0.03
-0.08
0.87
-0.04
11.5
0.1470
0.00
-0.04
-0.13
0.79
-0.05
12
0.2145
0.00
-0.05
-0.22
0.67
-0.06
12.5
0.2817
0.01
-0.06
-0.34
0.52
-0.07
13
0.3150
0.01
-0.07
-0.49
0.36
-0.06
13.5
0.2946
0.01
-0.06
-0.64
0.24
-0.05
14
0.2386
0.00
-0.05
-0.76
0.16
-0.04
14.5
0.1771
0.00
-0.04
-0.84
0.10
-0.03
15
0.1259
0.00
-0.03
-0.89
0.07
-0.02
15.5
0.0883
0.00
-0.02
-0.93
0.05
-0.02
16
0.0619
0.00
-0.01
-0.95
0.03
-0.01
16.5
0.0437
0.00
-0.01
-0.96
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.