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 — 20 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)DKNG 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 ≈ 70.3% · 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
0.98
-0.01
17
0.0251
0.00
-0.01
-0.02
0.97
-0.01
17.5
0.0343
0.00
-0.01
-0.03
0.96
-0.01
18
0.0505
0.00
-0.01
-0.04
0.94
-0.02
18.5
0.0819
0.00
-0.02
-0.06
0.89
-0.04
19
0.1348
0.00
-0.04
-0.11
0.81
-0.06
19.5
0.2018
0.01
-0.06
-0.20
0.69
-0.08
20
0.2632
0.01
-0.08
-0.32
0.54
-0.09
20.5
0.2968
0.01
-0.09
-0.46
0.40
-0.08
21
0.2894
0.01
-0.09
-0.61
0.27
-0.07
21.5
0.2459
0.01
-0.07
-0.74
0.17
-0.05
22
0.1850
0.01
-0.05
-0.84
0.10
-0.03
22.5
0.1268
0.00
-0.03
-0.91
0.06
-0.02
23
0.0824
0.00
-0.02
-0.95
0.04
-0.01
23.5
0.0526
0.00
-0.01
-0.97
0.02
-0.01
24
0.0336
0.00
-0.01
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 35 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.