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 — 27 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)PANG 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 ≈ 128.6% · 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
0.79
-0.07
27
0.0242
0.03
-0.06
-0.21
0.76
-0.07
28
0.0261
0.03
-0.07
-0.24
0.73
-0.07
29
0.0279
0.03
-0.07
-0.27
0.69
-0.08
30
0.0296
0.03
-0.07
-0.30
0.66
-0.08
31
0.0310
0.03
-0.08
-0.33
0.63
-0.08
32
0.0322
0.04
-0.08
-0.37
0.59
-0.08
33
0.0331
0.04
-0.08
-0.40
0.56
-0.08
34
0.0337
0.04
-0.08
-0.43
0.53
-0.08
35
0.0340
0.04
-0.08
-0.47
0.49
-0.08
36
0.0341
0.04
-0.08
-0.50
0.46
-0.08
37
0.0340
0.04
-0.08
-0.53
0.43
-0.08
38
0.0336
0.04
-0.08
-0.56
0.40
-0.08
39
0.0330
0.04
-0.08
-0.59
0.37
-0.08
40
0.0322
0.04
-0.08
-0.62
0.26
-0.07
45
0.0270
0.03
-0.07
-0.73
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.