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Westlake Corporation WLK 67.77 -1.3 -1.88%

WLK Historical Options Analysis

Explore WLK (Westlake Corporation) historical options data, volatility, Greeks and positioning. Compare signals over time in the free Historical Lab preview.

Previous-day view · Mon Sep 21 close. You are previewing the previous trading day. Subscribe to see today live and every other date — plans start at Delta, $39/mo. Sign up Sign in
Group
Window
Scale
Plotted 3/8
Metric library

Volatility

Interactive timeline

WLK / Comparative study

3 signals / 502 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -1.60
17.54
Mean
46.26
Window
-22.6%
ATM IV z -0.40
0.4
Mean
0.45
Window
+56.2%
IV Percentile z -2.23
7.14
Mean
68.97
Window
-82.2%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.65 0.86
ATM IV 0.65 1.00 0.47
IV Percent... 0.86 0.47 1.00
Source observations

Data inspector

1-50 of 502
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-21 67.77 17.54 0.4 7.14
2026-09-18 69.07 26.27 0.45 22.53
2026-09-17 70.57 18.77 0.41 7.91
2026-09-16 70.66 24.57 0.44 18.18
2026-09-15 70.02 19.72 0.42 10.67
2026-09-14 68.96 19.14 0.41 8.33
2026-09-11 70.81 0 0.31 0
2026-09-10 71.62 11.93 0.38 1.58
2026-09-09 71.78 4.39 0.33 0.4
2026-09-08 74.75 20.43 0.42 11.46
2026-09-07 74.79 19.14 0.42 8.73
2026-09-04 74.79 16.69 0.4 5.53
2026-09-03 74.6 16.12 0.4 4.74
2026-09-02 76.27 12.5 0.38 1.58
2026-09-01 74.23 18.72 0.41 5.95
2026-08-31 75.07 29.09 0.47 28.29
2026-08-28 75.71 18.42 0.41 6.35
2026-08-27 73.93 22.13 0.43 10.71
2026-08-26 74.61 21.57 0.43 10.71
2026-08-25 74.8 17.3 0.41 6.75
2026-08-24 76.49 12.74 0.38 1.99
2026-08-21 78.93 19.04 0.42 7.54
2026-08-20 78.85 16.62 0.4 5.56
2026-08-19 79.45 12.15 0.38 1.19
2026-08-18 77.52 11.52 0.37 0.79
2026-08-17 78.21 14.04 0.39 2.79
2026-08-14 79.55 13.46 0.38 1.59
2026-08-13 80.19 5.25 0.34 0.4
2026-08-12 79.17 19.66 0.42 7.54
2026-08-11 80.84 13.52 0.38 1.19
2026-08-10 79.09 14.17 0.39 1.59
2026-08-07 77.47 25.22 0.45 17.86
2026-08-06 77.47 24.94 0.45 17.06
2026-08-05 78.74 23.18 0.44 11.51
2026-08-04 80.63 25.93 0.45 19.05
2026-08-03 69.89 54.41 0.61 92.43
2026-07-31 70.5 91.1 0.82 99.6
2026-07-30 71.72 58.55 0.63 94.84
2026-07-29 72.25 73.64 0.72 99.21
2026-07-28 72.16 53.63 0.61 92.06
2026-07-27 72.33 68.08 0.69 99.2
2026-07-24 73.82 54.27 0.61 93.25
2026-07-23 75.23 33.52 0.5 42.46
2026-07-22 77.06 39 0.53 56.75
2026-07-21 76.22 41.18 0.54 61.9
2026-07-20 76.91 41.76 0.54 63.75
2026-07-17 77.63 40.13 0.53 60.32
2026-07-16 77.08 44.11 0.55 70.24
2026-07-15 77.05 40.36 0.53 62.3
2026-07-14 77.04 41.24 0.54 63.1