Event risk before this expiration:CPI release Wed, Oct 14 · FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 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 — 810 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)CAT open contracts per strike for Fri, Nov 20.
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, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 41.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.77
-0.41
730
0.0027
0.83
-0.41
-0.23
0.74
-0.44
740
0.0029
0.88
-0.44
-0.26
0.71
-0.46
750
0.0030
0.93
-0.47
-0.29
0.68
-0.48
760
0.0032
0.98
-0.49
-0.33
0.64
-0.50
770
0.0033
1.01
-0.51
-0.36
0.61
-0.51
780
0.0034
1.04
-0.52
-0.40
0.57
-0.52
790
0.0035
1.06
-0.53
-0.43
0.54
-0.53
800
0.0035
1.08
-0.54
-0.47
0.50
-0.53
810
0.0036
1.08
-0.54
-0.50
0.47
-0.53
820
0.0035
1.08
-0.54
-0.54
0.43
-0.52
830
0.0035
1.07
-0.53
-0.57
0.40
-0.51
840
0.0034
1.05
-0.52
-0.61
0.37
-0.50
850
0.0034
1.02
-0.51
-0.64
0.34
-0.48
860
0.0033
0.99
-0.49
-0.67
0.31
-0.47
870
0.0031
0.95
-0.48
-0.70
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.