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 — 19 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)ETHE 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 ≈ 62.7% · 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
0.98
-0.01
15
0.0232
0.00
-0.01
-0.02
0.96
-0.01
16
0.0523
0.00
-0.01
-0.04
0.94
-0.02
16.5
0.0820
0.00
-0.02
-0.06
0.91
-0.02
17
0.1322
0.00
-0.03
-0.09
0.84
-0.03
17.5
0.2156
0.01
-0.03
-0.16
0.72
-0.04
18
0.3347
0.01
-0.04
-0.28
0.54
-0.05
18.5
0.4240
0.01
-0.05
-0.47
0.34
-0.04
19
0.3799
0.01
-0.05
-0.67
0.20
-0.04
19.5
0.2668
0.01
-0.04
-0.81
0.12
-0.03
20
0.1735
0.00
-0.03
-0.89
0.07
-0.02
20.5
0.1127
0.00
-0.02
-0.93
0.05
-0.01
21
0.0749
0.00
-0.01
-0.95
0.03
-0.01
21.5
0.0511
0.00
-0.01
-0.97
0.02
-0.01
22
0.0358
0.00
-0.01
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 19 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.