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 — 28 — is the max pain price.
Open interest by strike · Fri, Nov 13
■ calls (up)■ puts (down)SIRI open contracts per strike for Fri, Nov 13.
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 13
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 13
— call IV— put IVATM ≈ 42.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 13
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 13
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.01
22
0.0237
0.01
-0.01
-0.06
0.94
-0.01
23
0.0384
0.01
-0.01
-0.09
0.91
-0.02
24
0.0624
0.01
-0.02
-0.13
0.84
-0.02
25
0.0979
0.01
-0.02
-0.20
0.72
-0.03
26
0.1386
0.02
-0.03
-0.32
0.57
-0.03
27
0.1642
0.02
-0.03
-0.46
0.41
-0.03
28
0.1577
0.02
-0.03
-0.61
0.28
-0.03
29
0.1291
0.02
-0.02
-0.73
0.18
-0.02
30
0.0969
0.02
-0.02
-0.82
0.12
-0.02
31
0.0701
0.01
-0.01
-0.88
0.08
-0.01
32
0.0501
0.01
-0.01
-0.92
0.06
-0.01
33
0.0358
0.01
-0.01
-0.95
0.04
-0.01
34
0.0257
0.01
-0.01
-0.96
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. 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.