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 — 12.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)TTD 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 ≈ 55.1% · 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
0.99
-0.00
9.5
0.0178
0.00
-0.00
-0.01
0.98
-0.00
10
0.0259
0.00
-0.00
-0.02
0.98
-0.01
10.5
0.0390
0.00
-0.01
-0.02
0.96
-0.01
11
0.0633
0.00
-0.01
-0.04
0.93
-0.01
11.5
0.1173
0.00
-0.01
-0.07
0.86
-0.02
12
0.2190
0.00
-0.02
-0.14
0.72
-0.02
12.5
0.3464
0.01
-0.02
-0.28
0.52
-0.03
13
0.4228
0.01
-0.03
-0.48
0.33
-0.03
13.5
0.3754
0.01
-0.03
-0.68
0.18
-0.02
14
0.2653
0.01
-0.02
-0.82
0.09
-0.01
14.5
0.1618
0.00
-0.01
-0.91
0.05
-0.01
15
0.0957
0.00
-0.01
-0.95
0.03
-0.01
15.5
0.0600
0.00
-0.01
-0.97
0.02
-0.00
16
0.0400
0.00
-0.00
-0.98
0.02
-0.00
16.5
0.0283
0.00
-0.00
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 34 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.