Event risk before this expiration:FOMC decision Wed, Oct 28 · 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 — 850 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)LITE 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 ≈ 73.5% · 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
0.77
-0.62
640
0.0013
0.91
-0.62
-0.23
0.74
-0.66
660
0.0014
0.97
-0.66
-0.27
0.71
-0.69
680
0.0015
1.03
-0.70
-0.30
0.67
-0.72
700
0.0016
1.08
-0.73
-0.33
0.64
-0.75
720
0.0017
1.12
-0.76
-0.37
0.62
-0.76
730
0.0017
1.13
-0.77
-0.39
0.58
-0.77
750
0.0018
1.16
-0.78
-0.42
0.57
-0.78
760
0.0018
1.17
-0.79
-0.44
0.55
-0.78
770
0.0018
1.18
-0.79
-0.46
0.53
-0.79
780
0.0018
1.18
-0.80
-0.48
0.51
-0.79
790
0.0018
1.19
-0.80
-0.49
0.50
-0.79
800
0.0018
1.19
-0.80
-0.51
0.48
-0.78
810
0.0018
1.18
-0.80
-0.53
0.46
-0.78
820
0.0018
1.18
-0.79
-0.55
0.45
-0.78
830
0.0018
1.17
-0.79
-0.56
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.