Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 — 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 — 21 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)GTX open contracts per strike for Fri, Nov 20.
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, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 53.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.93
-0.01
16
0.0140
0.01
-0.02
-0.07
0.89
-0.02
19
0.0259
0.02
-0.02
-0.11
0.86
-0.02
20
0.0321
0.02
-0.02
-0.13
0.84
-0.02
21
0.0400
0.02
-0.02
-0.16
0.80
-0.02
22
0.0498
0.02
-0.02
-0.20
0.69
-0.02
24
0.0743
0.03
-0.02
-0.31
0.61
-0.02
25
0.0854
0.03
-0.02
-0.39
0.52
-0.02
26
0.0909
0.03
-0.02
-0.48
0.43
-0.02
27
0.0890
0.03
-0.02
-0.57
0.35
-0.02
28
0.0817
0.03
-0.02
-0.65
0.29
-0.02
29
0.0725
0.03
-0.02
-0.71
0.25
-0.02
30
0.0634
0.03
-0.02
-0.75
0.21
-0.02
31
0.0553
0.02
-0.02
-0.79
0.18
-0.02
32
0.0483
0.02
-0.02
-0.82
0.16
-0.02
33
0.0424
0.02
-0.02
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 22 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.