■ 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 — 340 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)AIT 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 ≈ 27.4% · 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
0.94
-0.02
280
0.0018
0.21
-0.04
-0.06
0.90
-0.04
300
0.0031
0.33
-0.05
-0.10
0.86
-0.06
310
0.0040
0.41
-0.06
-0.14
0.82
-0.07
320
0.0049
0.49
-0.07
-0.19
0.76
-0.08
330
0.0059
0.57
-0.09
-0.24
0.70
-0.09
340
0.0068
0.64
-0.09
-0.31
0.63
-0.10
350
0.0075
0.69
-0.10
-0.38
0.55
-0.10
360
0.0080
0.72
-0.10
-0.46
0.47
-0.10
370
0.0081
0.73
-0.10
-0.54
0.39
-0.10
380
0.0079
0.70
-0.10
-0.63
0.32
-0.09
390
0.0074
0.65
-0.09
-0.70
0.25
-0.08
400
0.0066
0.59
-0.08
-0.78
0.20
-0.07
410
0.0058
0.51
-0.07
-0.84
0.15
-0.06
420
0.0049
0.43
-0.06
-0.89
0.11
-0.05
430
0.0040
0.36
-0.05
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 31 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.