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 — 90 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)SWK 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 ≈ 39.9% · 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
0.98
-0.01
65
0.0032
0.01
-0.01
-0.02
0.96
-0.01
70
0.0062
0.03
-0.02
-0.04
0.92
-0.03
75
0.0114
0.05
-0.03
-0.09
0.84
-0.04
80
0.0189
0.07
-0.04
-0.16
0.79
-0.05
82.5
0.0232
0.09
-0.05
-0.21
0.72
-0.05
85
0.0274
0.10
-0.05
-0.28
0.65
-0.06
87.5
0.0310
0.11
-0.06
-0.36
0.57
-0.06
90
0.0333
0.12
-0.06
-0.44
0.48
-0.06
92.5
0.0341
0.12
-0.06
-0.52
0.40
-0.06
95
0.0332
0.11
-0.06
-0.61
0.32
-0.05
97.5
0.0309
0.11
-0.06
-0.69
0.26
-0.05
100
0.0277
0.10
-0.05
-0.75
0.16
-0.04
105
0.0201
0.07
-0.04
-0.86
0.09
-0.03
110
0.0135
0.05
-0.03
-0.93
0.05
-0.02
115
0.0087
0.03
-0.02
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 18 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.