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 — 45.5 — is the max pain price.
Open interest by strike · Thu, Oct 29
■ calls (up)■ puts (down)IBIT open contracts per strike for Thu, Oct 29.
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 · Thu, Oct 29
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Thu, Oct 29
— call IV— put IVATM ≈ 35.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Thu, Oct 29
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 · Thu, Oct 29
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.03
42.5
0.0576
0.01
-0.03
-0.09
0.89
-0.04
43
0.0722
0.01
-0.04
-0.12
0.85
-0.04
43.5
0.0899
0.01
-0.04
-0.15
0.81
-0.05
44
0.1101
0.02
-0.05
-0.19
0.75
-0.06
44.5
0.1315
0.02
-0.06
-0.25
0.68
-0.06
45
0.1516
0.02
-0.06
-0.32
0.60
-0.07
45.5
0.1672
0.03
-0.07
-0.40
0.52
-0.07
46
0.1755
0.03
-0.07
-0.48
0.43
-0.07
46.5
0.1751
0.03
-0.07
-0.57
0.34
-0.06
47
0.1659
0.02
-0.06
-0.66
0.27
-0.05
47.5
0.1492
0.02
-0.05
-0.74
0.20
-0.04
48
0.1273
0.02
-0.04
-0.81
0.14
-0.04
48.5
0.1034
0.01
-0.03
-0.86
0.10
-0.03
49
0.0811
0.01
-0.03
-0.90
0.07
-0.02
49.5
0.0624
0.01
-0.02
-0.93
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.