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 — 75 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)WMB 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 ≈ 34.2% · 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
0.88
-0.03
67
0.0295
0.04
-0.03
-0.13
0.84
-0.03
68
0.0350
0.05
-0.03
-0.16
0.80
-0.04
69
0.0406
0.05
-0.04
-0.20
0.76
-0.04
70
0.0460
0.06
-0.04
-0.24
0.71
-0.05
71
0.0509
0.07
-0.05
-0.29
0.65
-0.05
72
0.0550
0.07
-0.05
-0.35
0.60
-0.05
73
0.0580
0.07
-0.05
-0.41
0.54
-0.06
74
0.0599
0.08
-0.06
-0.47
0.48
-0.05
75
0.0605
0.08
-0.06
-0.53
0.42
-0.05
76
0.0597
0.07
-0.05
-0.59
0.36
-0.05
77
0.0576
0.07
-0.05
-0.65
0.30
-0.05
78
0.0543
0.07
-0.05
-0.70
0.26
-0.04
79
0.0500
0.06
-0.04
-0.75
0.21
-0.04
80
0.0450
0.06
-0.04
-0.80
0.17
-0.03
81
0.0396
0.05
-0.03
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 31 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.