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 — 970 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)URI 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 ≈ 42.0% · 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
0.75
-0.44
950
0.0016
1.40
-0.46
-0.25
0.73
-0.46
960
0.0017
1.45
-0.47
-0.26
0.72
-0.47
970
0.0018
1.50
-0.49
-0.28
0.70
-0.49
980
0.0018
1.55
-0.50
-0.30
0.66
-0.51
1000
0.0019
1.63
-0.53
-0.34
0.62
-0.53
1020
0.0020
1.70
-0.55
-0.38
0.57
-0.55
1040
0.0021
1.74
-0.56
-0.43
0.53
-0.56
1060
0.0021
1.77
-0.56
-0.47
0.49
-0.56
1080
0.0022
1.77
-0.56
-0.51
0.45
-0.55
1100
0.0021
1.76
-0.56
-0.55
0.41
-0.54
1120
0.0021
1.73
-0.54
-0.59
0.37
-0.52
1140
0.0020
1.68
-0.52
-0.63
0.33
-0.50
1160
0.0020
1.62
-0.50
-0.67
0.30
-0.48
1180
0.0019
1.54
-0.47
-0.71
0.26
-0.45
1200
0.0018
1.46
-0.45
-0.74
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.