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 — 16 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)IAG 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 ≈ 56.8% · 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
0.99
0.00
11
0.0061
0.00
-0.00
-0.01
0.98
-0.00
12
0.0120
0.00
-0.00
-0.02
0.96
-0.00
13
0.0232
0.00
-0.00
-0.03
0.93
-0.01
14
0.0427
0.01
-0.01
-0.07
0.87
-0.01
15
0.0721
0.01
-0.01
-0.13
0.78
-0.01
16
0.1068
0.02
-0.01
-0.22
0.65
-0.02
17
0.1349
0.02
-0.02
-0.35
0.50
-0.02
18
0.1448
0.02
-0.02
-0.50
0.37
-0.02
19
0.1354
0.02
-0.02
-0.63
0.26
-0.01
20
0.1141
0.02
-0.01
-0.74
0.18
-0.01
21
0.0894
0.01
-0.01
-0.83
0.12
-0.01
22
0.0669
0.01
-0.01
-0.89
0.08
-0.01
23
0.0487
0.01
-0.01
-0.93
0.05
-0.01
24
0.0348
0.01
-0.01
-0.95
0.04
-0.00
25
0.0247
0.00
-0.00
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 32 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.