■ 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 — 50 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)GIL open contracts per strike for Fri, Dec 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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 31.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.00
35
0.0052
0.03
-0.01
-0.04
0.93
-0.01
40
0.0097
0.05
-0.01
-0.08
0.90
-0.01
42.5
0.0130
0.06
-0.01
-0.10
0.86
-0.01
45
0.0170
0.07
-0.01
-0.14
0.82
-0.01
47.5
0.0218
0.09
-0.01
-0.19
0.76
-0.01
50
0.0271
0.10
-0.01
-0.25
0.68
-0.01
52.5
0.0322
0.12
-0.02
-0.33
0.60
-0.02
55
0.0362
0.13
-0.02
-0.41
0.50
-0.02
57.5
0.0383
0.13
-0.02
-0.51
0.41
-0.02
60
0.0379
0.13
-0.02
-0.61
0.33
-0.01
62.5
0.0353
0.12
-0.01
-0.70
0.26
-0.01
65
0.0313
0.10
-0.01
-0.78
0.20
-0.01
67.5
0.0268
0.09
-0.01
-0.84
0.16
-0.01
70
0.0225
0.08
-0.01
-0.90
0.12
-0.01
72.5
0.0186
0.07
-0.01
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 21 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.