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 — 3 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)XNDU 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 ≈ 121.2% · 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
—
0.5
0.0013
—
0.00
-0.00
1.00
-0.00
1
0.0069
—
-0.00
-0.00
0.99
-0.00
1.5
0.0292
0.00
-0.00
-0.01
0.97
-0.01
2
0.1279
0.00
-0.01
-0.03
0.85
-0.01
2.5
0.6540
0.00
-0.01
-0.15
0.29
-0.01
3
1.2433
0.00
-0.01
-0.71
0.06
-0.01
3.5
0.3082
0.00
-0.01
-0.95
0.02
-0.00
4
0.1013
0.00
-0.00
-0.98
0.01
-0.00
4.5
0.0440
0.00
-0.00
-0.99
0.01
-0.00
5
0.0228
—
-0.00
-1.00
0.00
0.00
5.5
0.0132
—
0.00
-1.00
0.00
0.00
6
0.0084
—
0.00
-1.00
0.00
0.00
6.5
0.0056
—
0.00
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 13 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.