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 — 53 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)GTLB 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 ≈ 50.1% · 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
0.92
-0.06
49.5
0.0282
0.01
-0.06
-0.08
0.91
-0.06
50
0.0321
0.01
-0.06
-0.10
0.87
-0.07
51
0.0411
0.02
-0.07
-0.13
0.83
-0.09
52
0.0518
0.02
-0.09
-0.17
0.78
-0.10
53
0.0635
0.02
-0.10
-0.22
0.71
-0.11
54
0.0750
0.03
-0.11
-0.29
0.63
-0.12
55
0.0844
0.03
-0.12
-0.37
0.54
-0.13
56
0.0898
0.03
-0.13
-0.46
0.45
-0.13
57
0.0900
0.03
-0.13
-0.55
0.37
-0.12
58
0.0852
0.03
-0.12
-0.64
0.29
-0.11
59
0.0767
0.03
-0.11
-0.71
0.23
-0.10
60
0.0664
0.02
-0.10
-0.78
0.17
-0.08
61
0.0557
0.02
-0.08
-0.83
0.13
-0.07
62
0.0457
0.02
-0.07
-0.87
0.10
-0.06
63
0.0370
0.01
-0.06
-0.90
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.