■ 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 — 380 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)BAP 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 ≈ 37.2% · 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
0.87
-0.06
300
0.0025
0.41
-0.09
-0.13
0.84
-0.07
310
0.0030
0.47
-0.10
-0.16
0.81
-0.09
320
0.0034
0.53
-0.10
-0.19
0.77
-0.10
330
0.0039
0.59
-0.11
-0.23
0.73
-0.11
340
0.0044
0.65
-0.12
-0.28
0.68
-0.12
350
0.0049
0.70
-0.13
-0.32
0.63
-0.13
360
0.0052
0.74
-0.13
-0.38
0.52
-0.13
380
0.0056
0.78
-0.14
-0.49
0.46
-0.13
390
0.0057
0.77
-0.13
-0.55
0.41
-0.13
400
0.0056
0.76
-0.13
-0.60
0.36
-0.13
410
0.0054
0.73
-0.12
-0.66
0.31
-0.12
420
0.0051
0.69
-0.11
-0.71
0.27
-0.11
430
0.0047
0.65
-0.10
-0.75
0.23
-0.10
440
0.0044
0.60
-0.10
-0.79
0.20
-0.10
450
0.0040
0.55
-0.09
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.