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 — 32 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)HPQ 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 ≈ 44.5% · 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
0.91
-0.01
27
0.0536
0.01
-0.01
-0.09
0.88
-0.02
27.5
0.0666
0.01
-0.02
-0.13
0.84
-0.02
28
0.0808
0.02
-0.02
-0.16
0.79
-0.03
28.5
0.0949
0.02
-0.03
-0.21
0.74
-0.03
29
0.1076
0.02
-0.03
-0.27
0.68
-0.03
29.5
0.1181
0.02
-0.03
-0.33
0.61
-0.03
30
0.1259
0.03
-0.04
-0.39
0.55
-0.04
30.5
0.1306
0.03
-0.04
-0.45
0.48
-0.04
31
0.1318
0.03
-0.04
-0.52
0.42
-0.04
31.5
0.1296
0.03
-0.04
-0.58
0.36
-0.03
32
0.1241
0.03
-0.03
-0.65
0.30
-0.03
32.5
0.1156
0.02
-0.03
-0.70
0.25
-0.03
33
0.1050
0.02
-0.03
-0.76
0.21
-0.03
33.5
0.0934
0.02
-0.03
-0.80
0.18
-0.02
34
0.0820
0.02
-0.02
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 30 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.