Event risk before this expiration:Jobs report Fri, Oct 2 — 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 — 84 — is the max pain price.
Open interest by strike · Fri, Oct 9
■ calls (up)■ puts (down)GM open contracts per strike for Fri, Oct 9.
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, Oct 9
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 9
— call IV— put IVATM ≈ 33.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 9
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, Oct 9
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.87
-0.04
78
0.0314
0.04
-0.04
-0.13
0.84
-0.04
79
0.0372
0.05
-0.04
-0.16
0.80
-0.05
80
0.0432
0.05
-0.05
-0.20
0.75
-0.06
81
0.0490
0.06
-0.06
-0.25
0.70
-0.06
82
0.0542
0.07
-0.06
-0.30
0.64
-0.07
83
0.0586
0.07
-0.07
-0.36
0.58
-0.07
84
0.0617
0.07
-0.07
-0.42
0.52
-0.07
85
0.0634
0.07
-0.07
-0.49
0.45
-0.07
86
0.0635
0.07
-0.07
-0.55
0.39
-0.07
87
0.0620
0.07
-0.07
-0.61
0.33
-0.06
88
0.0589
0.07
-0.06
-0.68
0.28
-0.06
89
0.0546
0.06
-0.06
-0.73
0.23
-0.05
90
0.0493
0.06
-0.05
-0.78
0.18
-0.04
91
0.0434
0.05
-0.04
-0.83
0.15
-0.04
92
0.0375
0.04
-0.04
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.