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NorthWestern Energy Group NWE 68.47 -0.83 -1.19%

Previous-day view · Fri Sep 18 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

NWE / Comparative study

3 signals / 508 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 1.77
48.41
Mean
18.46
Window
-10.0%
ATM IV z -0.03
0.33
Mean
0.34
Window
-49.9%
IV Percentile z 1.28
80.08
Mean
48.08
Window
+4.6%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.95 0.77
ATM IV 0.95 1.00 0.76
IV Percent... 0.77 0.76 1.00
Source observations

Data inspector

1-50 of 508
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-18 68.47 48.41 0.33 80.08
2026-09-17 69.3 34.04 0.27 50.78
2026-09-16 68.52 34.14 0.51 98.83
2026-09-15 67.98 9.71 0.24 25.78
2026-09-14 68.65 9.51 0.24 25.1
2026-09-11 69.24 18.91 0.34 82.03
2026-09-10 70.01 13.84 0.28 60.55
2026-09-09 70.57 13.75 0.28 58.98
2026-09-08 71.78 7.85 0.22 11.72
2026-09-07 70.78 10.41 0.25 29.41
2026-09-04 70.78 9.63 0.24 24.61
2026-09-03 70.9 12.27 0.27 45.7
2026-09-02 70.19 11.45 0.26 40.63
2026-09-01 69.91 15.54 0.3 66.67
2026-08-31 69.16 25.72 0.42 91.73
2026-08-28 70.32 14.21 0.29 60
2026-08-27 71.01 10.97 0.25 32.55
2026-08-26 71.48 11.05 0.25 33.33
2026-08-25 70.88 13.5 0.28 56.08
2026-08-24 69.66 6.93 0.21 7.87
2026-08-21 69.45 17.08 0.32 73.73
2026-08-20 70.81 11.04 0.25 32.94
2026-08-19 70.58 11.1 0.25 33.73
2026-08-18 70.61 10.84 0.25 32.16
2026-08-17 70.82 8.94 0.23 23.23
2026-08-14 71.81 10.55 0.25 30.59
2026-08-13 71.52 6.97 0.21 9.8
2026-08-12 70.56 15.19 0.3 64.71
2026-08-11 70.65 14.56 0.29 61.57
2026-08-10 71.22 9.2 0.23 24.8
2026-08-07 72.09 6.4 0.2 9.41
2026-08-06 70.27 7.03 0.21 11.37
2026-08-05 69.14 13.3 0.28 53.73
2026-08-04 69.86 9.28 0.23 25.88
2026-08-03 68.9 15.94 0.31 68.5
2026-07-31 68.74 14.19 0.27 52.55
2026-07-30 69.73 14.74 0.28 56.86
2026-07-29 70.61 9.32 0.22 16.08
2026-07-28 72.29 15.11 0.28 58.04
2026-07-27 72.2 14.61 0.28 54.33
2026-07-24 72.86 13.82 0.27 49.41
2026-07-23 72.55 16.95 0.31 67.06
2026-07-22 72.53 12.6 0.26 40
2026-07-21 71.8 12.71 0.26 40.78
2026-07-20 71.88 17.92 0.32 71.26
2026-07-17 72.06 15.42 0.29 60.39
2026-07-16 73.27 7.27 0.2 12.16
2026-07-15 71.72 28.55 0.44 93.33
2026-07-14 72.91 22.95 0.37 86.27
2026-07-13 73.2 18.71 0.33 74.8