Event risk before this expiration:Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 35 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)ERO 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 ≈ 57.8% · 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
0.89
-0.01
24
0.0251
0.02
-0.01
-0.11
0.86
-0.01
25
0.0306
0.03
-0.02
-0.14
0.82
-0.01
26
0.0364
0.03
-0.02
-0.18
0.78
-0.02
27
0.0424
0.03
-0.02
-0.22
0.73
-0.02
28
0.0479
0.04
-0.02
-0.27
0.68
-0.02
29
0.0527
0.04
-0.02
-0.32
0.62
-0.02
30
0.0562
0.04
-0.03
-0.38
0.56
-0.03
31
0.0584
0.04
-0.03
-0.44
0.51
-0.03
32
0.0592
0.05
-0.03
-0.50
0.45
-0.03
33
0.0586
0.05
-0.03
-0.56
0.40
-0.03
34
0.0568
0.04
-0.02
-0.61
0.35
-0.02
35
0.0542
0.04
-0.02
-0.66
0.30
-0.02
36
0.0508
0.04
-0.02
-0.71
0.26
-0.02
37
0.0472
0.04
-0.02
-0.75
0.23
-0.02
38
0.0433
0.04
-0.02
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 29 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.