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 — 14 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)NU 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 ≈ 62.4% · 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
0.91
-0.01
11.5
0.0471
0.01
-0.01
-0.09
0.89
-0.01
12
0.0599
0.01
-0.01
-0.11
0.85
-0.01
12.5
0.0744
0.01
-0.01
-0.15
0.81
-0.01
13
0.0904
0.01
-0.01
-0.19
0.76
-0.01
13.5
0.1067
0.01
-0.01
-0.24
0.70
-0.02
14
0.1223
0.01
-0.02
-0.30
0.63
-0.02
14.5
0.1355
0.02
-0.02
-0.37
0.56
-0.02
15
0.1449
0.02
-0.02
-0.44
0.49
-0.02
15.5
0.1493
0.02
-0.02
-0.52
0.41
-0.02
16
0.1481
0.02
-0.02
-0.59
0.35
-0.01
16.5
0.1416
0.02
-0.01
-0.66
0.28
-0.01
17
0.1307
0.01
-0.01
-0.72
0.23
-0.01
17.5
0.1170
0.01
-0.01
-0.78
0.18
-0.01
18
0.1020
0.01
-0.01
-0.83
0.14
-0.01
18.5
0.0868
0.01
-0.01
-0.87
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.