Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 · 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 — 27 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)T 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 ≈ 28.2% · 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
1.00
—
15
0.0016
0.00
-0.00
-0.01
0.94
-0.01
22
0.0612
0.01
-0.01
-0.11
0.90
-0.01
22.5
0.0846
0.01
-0.01
-0.14
0.86
-0.01
23
0.1128
0.02
-0.01
-0.19
0.79
-0.01
23.5
0.1413
0.02
-0.01
-0.25
0.71
-0.01
24
0.1655
0.03
-0.01
-0.33
0.63
-0.01
24.5
0.1819
0.03
-0.01
-0.41
0.53
-0.01
25
0.1883
0.03
-0.01
-0.49
0.44
-0.01
25.5
0.1846
0.03
-0.01
-0.58
0.35
-0.01
26
0.1719
0.03
-0.01
-0.67
0.27
-0.01
26.5
0.1527
0.03
-0.01
-0.74
0.21
-0.01
27
0.1301
0.02
-0.01
-0.81
0.15
-0.01
27.5
0.1070
0.02
-0.01
-0.86
0.12
-0.01
28
0.0857
0.02
-0.01
-0.90
0.09
-0.01
28.5
0.0678
0.01
-0.00
-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 19 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.