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 — 16.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)XE 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 ≈ 94.0% · 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
0.83
-0.01
13
0.0545
0.01
-0.01
-0.17
0.80
-0.02
13.5
0.0620
0.01
-0.02
-0.20
0.76
-0.02
14
0.0696
0.02
-0.02
-0.24
0.72
-0.02
14.5
0.0766
0.02
-0.02
-0.28
0.68
-0.02
15
0.0828
0.02
-0.02
-0.32
0.63
-0.02
15.5
0.0875
0.02
-0.02
-0.36
0.59
-0.02
16
0.0905
0.02
-0.02
-0.41
0.54
-0.02
16.5
0.0919
0.02
-0.02
-0.46
0.50
-0.02
17
0.0916
0.02
-0.02
-0.50
0.45
-0.02
17.5
0.0901
0.02
-0.02
-0.54
0.41
-0.02
18
0.0875
0.02
-0.02
-0.58
0.35
-0.02
19
0.0805
0.02
-0.02
-0.65
0.32
-0.02
19.5
0.0765
0.02
-0.02
-0.68
0.29
-0.02
20
0.0724
0.02
-0.02
-0.70
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 16 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.