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 — 30 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)MUU 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 ≈ 120.7% · 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
0.84
-0.07
20.5
0.0587
0.01
-0.07
-0.16
0.80
-0.08
21
0.0670
0.01
-0.08
-0.20
0.77
-0.09
21.5
0.0752
0.01
-0.09
-0.23
0.72
-0.10
22
0.0831
0.01
-0.10
-0.28
0.68
-0.10
22.5
0.0902
0.01
-0.10
-0.32
0.63
-0.11
23
0.0962
0.01
-0.11
-0.37
0.58
-0.11
23.5
0.1008
0.01
-0.11
-0.42
0.53
-0.11
24
0.1037
0.01
-0.11
-0.47
0.48
-0.11
24.5
0.1047
0.01
-0.11
-0.52
0.43
-0.11
25
0.1038
0.01
-0.11
-0.57
0.38
-0.10
25.5
0.1011
0.01
-0.10
-0.62
0.33
-0.10
26
0.0968
0.01
-0.10
-0.67
0.29
-0.09
26.5
0.0913
0.01
-0.09
-0.71
0.25
-0.08
27
0.0848
0.01
-0.08
-0.75
0.21
-0.08
27.5
0.0776
0.01
-0.08
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 48 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.