■ 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 — 39 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)GSL 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 ≈ 23.1% · 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
1.00
0.00
34
0.0047
0.00
-0.01
-0.05
0.99
-0.00
35
0.0100
0.00
-0.01
-0.07
0.98
-0.00
36
0.0208
0.00
-0.01
-0.09
0.96
-0.01
37
0.0420
0.01
-0.01
-0.13
0.91
-0.01
38
0.0791
0.02
-0.01
-0.19
0.82
-0.02
39
0.1281
0.03
-0.01
-0.28
0.68
-0.02
40
0.1647
0.04
-0.02
-0.39
0.51
-0.02
41
0.1602
0.05
-0.02
-0.52
0.37
-0.02
42
0.1316
0.05
-0.02
-0.65
0.26
-0.01
43
0.1038
0.04
-0.01
-0.75
0.19
-0.01
44
0.0806
0.04
-0.01
-0.83
0.14
-0.01
45
0.0618
0.03
-0.01
-0.88
0.10
-0.01
46
0.0472
0.02
-0.01
-0.91
0.07
-0.01
47
0.0360
0.02
-0.01
-0.94
0.03
-0.00
50
0.0168
0.01
-0.00
-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 23 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.