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 — 47 — is the max pain price.
Open interest by strike · Wed, Oct 28
■ calls (up)■ puts (down)IBIT open contracts per strike for Wed, Oct 28.
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 · Wed, Oct 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Wed, Oct 28
— call IV— put IVATM ≈ 35.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Wed, Oct 28
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 · Wed, Oct 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.92
-0.03
42.5
0.0556
0.01
-0.03
-0.08
0.90
-0.04
43
0.0705
0.01
-0.04
-0.10
0.87
-0.04
43.5
0.0894
0.01
-0.04
-0.13
0.82
-0.05
44
0.1124
0.01
-0.05
-0.18
0.77
-0.06
44.5
0.1380
0.02
-0.06
-0.23
0.70
-0.06
45
0.1628
0.02
-0.06
-0.30
0.61
-0.07
45.5
0.1820
0.02
-0.07
-0.39
0.52
-0.07
46
0.1919
0.02
-0.07
-0.48
0.42
-0.07
46.5
0.1903
0.02
-0.07
-0.58
0.33
-0.06
47
0.1776
0.02
-0.06
-0.67
0.25
-0.05
47.5
0.1558
0.02
-0.05
-0.76
0.18
-0.04
48
0.1288
0.02
-0.04
-0.83
0.13
-0.03
48.5
0.1012
0.01
-0.03
-0.88
0.09
-0.03
49
0.0768
0.01
-0.03
-0.92
0.06
-0.02
49.5
0.0573
0.01
-0.02
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 39 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.