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 — 515 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)NOC 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 ≈ 30.7% · 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
0.78
-0.19
450
0.0060
0.46
-0.19
-0.22
0.75
-0.20
455
0.0066
0.50
-0.21
-0.26
0.71
-0.21
460
0.0071
0.53
-0.22
-0.29
0.68
-0.22
465
0.0075
0.56
-0.23
-0.33
0.64
-0.23
470
0.0079
0.58
-0.24
-0.37
0.60
-0.24
475
0.0082
0.60
-0.24
-0.41
0.56
-0.24
480
0.0084
0.61
-0.25
-0.45
0.52
-0.24
485
0.0086
0.62
-0.25
-0.50
0.47
-0.24
490
0.0086
0.62
-0.25
-0.54
0.43
-0.24
495
0.0085
0.61
-0.25
-0.58
0.39
-0.23
500
0.0083
0.60
-0.24
-0.63
0.35
-0.23
505
0.0080
0.58
-0.23
-0.67
0.31
-0.21
510
0.0076
0.55
-0.23
-0.71
0.28
-0.20
515
0.0072
0.53
-0.21
-0.74
0.25
-0.19
520
0.0068
0.49
-0.20
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.