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 — 97.5 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)INSM 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 ≈ 68.3% · 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
0.93
-0.05
70
0.0066
0.03
-0.05
-0.07
0.89
-0.07
75
0.0102
0.05
-0.07
-0.11
0.82
-0.09
80
0.0146
0.06
-0.09
-0.18
0.73
-0.11
85
0.0191
0.08
-0.11
-0.27
0.68
-0.12
87.5
0.0210
0.09
-0.12
-0.32
0.63
-0.13
90
0.0225
0.09
-0.13
-0.38
0.57
-0.13
92.5
0.0235
0.10
-0.13
-0.44
0.51
-0.13
95
0.0239
0.10
-0.13
-0.50
0.45
-0.13
97.5
0.0237
0.10
-0.13
-0.56
0.39
-0.13
100
0.0230
0.09
-0.13
-0.61
0.30
-0.12
105
0.0205
0.09
-0.12
-0.71
0.22
-0.10
110
0.0172
0.07
-0.10
-0.79
0.16
-0.08
115
0.0139
0.06
-0.08
-0.85
0.12
-0.07
120
0.0109
0.05
-0.07
-0.90
0.08
-0.05
125
0.0085
0.04
-0.05
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 37 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.