Event risk before this expiration:FOMC decision Wed, Oct 28 — 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 — 78 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)LEN open contracts per strike for Fri, Oct 30.
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 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 44.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-0.05
68
0.0311
0.04
-0.05
-0.15
0.82
-0.06
69
0.0361
0.04
-0.06
-0.18
0.78
-0.06
70
0.0410
0.05
-0.06
-0.22
0.73
-0.07
71
0.0457
0.05
-0.07
-0.27
0.69
-0.07
72
0.0498
0.06
-0.07
-0.32
0.63
-0.08
73
0.0531
0.06
-0.08
-0.37
0.58
-0.08
74
0.0553
0.06
-0.08
-0.42
0.52
-0.08
75
0.0563
0.06
-0.08
-0.48
0.47
-0.08
76
0.0561
0.06
-0.08
-0.54
0.41
-0.08
77
0.0548
0.06
-0.08
-0.59
0.36
-0.08
78
0.0525
0.06
-0.08
-0.64
0.31
-0.07
79
0.0494
0.06
-0.08
-0.69
0.27
-0.07
80
0.0458
0.05
-0.07
-0.73
0.23
-0.07
81
0.0418
0.05
-0.07
-0.77
0.20
-0.06
82
0.0378
0.04
-0.06
-0.81
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 32 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.