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 — 86 — is the max pain price.
Open interest by strike · Fri, Oct 2
■ calls (up)■ puts (down)GM open contracts per strike for Fri, Oct 2.
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 2
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 2
— call IV— put IVATM ≈ 33.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 2
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 2
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.04
78
0.0295
0.03
-0.04
-0.09
0.88
-0.05
79
0.0369
0.03
-0.05
-0.12
0.84
-0.06
80
0.0458
0.04
-0.06
-0.16
0.79
-0.07
81
0.0554
0.04
-0.07
-0.21
0.73
-0.07
82
0.0646
0.05
-0.08
-0.27
0.67
-0.08
83
0.0725
0.05
-0.08
-0.34
0.59
-0.09
84
0.0782
0.06
-0.09
-0.41
0.51
-0.09
85
0.0811
0.06
-0.09
-0.49
0.43
-0.09
86
0.0806
0.06
-0.09
-0.57
0.35
-0.08
87
0.0767
0.06
-0.08
-0.65
0.28
-0.07
88
0.0700
0.05
-0.07
-0.73
0.21
-0.06
89
0.0612
0.04
-0.06
-0.79
0.16
-0.05
90
0.0512
0.04
-0.05
-0.85
0.12
-0.04
91
0.0414
0.03
-0.04
-0.89
0.09
-0.03
92
0.0327
0.02
-0.03
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 33 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.