Event risk before this expiration: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 — 85 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)CRH 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 ≈ 40.9% · 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
0.85
-0.05
76
0.0221
0.05
-0.06
-0.16
0.83
-0.06
77
0.0246
0.06
-0.06
-0.18
0.82
-0.06
77.5
0.0259
0.06
-0.06
-0.20
0.75
-0.06
80
0.0330
0.07
-0.07
-0.27
0.66
-0.07
82.5
0.0398
0.08
-0.07
-0.36
0.64
-0.07
83
0.0410
0.08
-0.07
-0.38
0.60
-0.07
84
0.0431
0.09
-0.07
-0.42
0.55
-0.07
85
0.0446
0.09
-0.07
-0.46
0.51
-0.07
86
0.0454
0.09
-0.07
-0.51
0.46
-0.07
87
0.0456
0.09
-0.07
-0.55
0.44
-0.07
87.5
0.0453
0.09
-0.07
-0.57
0.42
-0.07
88
0.0449
0.09
-0.07
-0.59
0.38
-0.07
89
0.0437
0.08
-0.07
-0.64
0.34
-0.07
90
0.0418
0.08
-0.07
-0.68
0.27
-0.06
92
0.0371
0.07
-0.06
-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 26 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.