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 — 48 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)BUG 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 ≈ 41.0% · 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
0.88
-0.02
43
0.0288
0.03
-0.02
-0.11
0.85
-0.03
44
0.0350
0.03
-0.03
-0.14
0.82
-0.03
45
0.0418
0.04
-0.03
-0.18
0.77
-0.03
46
0.0489
0.04
-0.03
-0.23
0.72
-0.04
47
0.0558
0.05
-0.04
-0.28
0.66
-0.04
48
0.0618
0.05
-0.04
-0.34
0.59
-0.04
49
0.0662
0.05
-0.04
-0.41
0.53
-0.04
50
0.0685
0.06
-0.04
-0.47
0.46
-0.04
51
0.0685
0.06
-0.04
-0.54
0.39
-0.04
52
0.0662
0.05
-0.04
-0.61
0.33
-0.04
53
0.0622
0.05
-0.04
-0.67
0.28
-0.04
54
0.0571
0.05
-0.04
-0.72
0.23
-0.03
55
0.0513
0.04
-0.03
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 13 strikes around the money — all 21 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.