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NPK International Inc NPKI 13.26 0.07 0.53%

Previous-day view · Fri Sep 11 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

NPKI / Comparative study

3 signals / 381 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 0.11
12.67
Mean
10.87
Window
-60.0%
ATM IV z -0.21
0.74
Mean
0.96
Window
-63.2%
IV Percentile z 1.24
74.1
Mean
39.45
Window
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Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.85 0.64
ATM IV 0.85 1.00 0.54
IV Percent... 0.64 0.54 1.00
Source observations

Data inspector

1-50 of 381
  • 1 / 8
Date Close IV Rank ATM IV IV Percentile
2026-09-11 13.26 12.67 0.74 74.1
2026-09-10 13.19 7.01 0.47 20.32
2026-09-09 13.5 30.85 1.6 97.21
2026-09-08 13.5 21.73 1.17 96.02
2026-09-07 13.22 22.62 1.21 96.4
2026-09-04 13.22 19.73 1.07 94.82
2026-09-03 13.12 19.36 1.06 94.42
2026-09-02 13.25 17.84 0.98 91.24
2026-09-01 13.24 16.77 0.93 89.6
2026-08-31 13.28 16.45 0.92 88.76
2026-08-28 13.16 15.72 0.88 87.6
2026-08-27 13.55 13.04 0.76 80
2026-08-26 13.18 14.38 0.82 84
2026-08-25 13.16 14.2 0.81 83.2
2026-08-24 13.16 14.07 0.81 83.13
2026-08-21 13.68 10.88 0.65 64
2026-08-20 13.8 10.08 0.62 53.6
2026-08-19 14.05 9.33 0.58 45.2
2026-08-18 14.01 9.34 0.58 45.6
2026-08-17 14.32 5.59 0.4 7.23
2026-08-14 14.22 5.68 0.41 8.4
2026-08-13 13.85 9.2 0.57 44.4
2026-08-12 14.01 8.91 0.56 40
2026-08-11 13.85 8.17 0.53 31.2
2026-08-10 13.53 8.32 0.53 32.53
2026-08-07 13.48 9.42 0.58 46.8
2026-08-06 13.54 8.77 0.55 37.6
2026-08-05 13.58 8.07 0.52 30.8
2026-08-04 13.61 7.96 0.52 29.2
2026-08-03 13.21 11.72 0.69 67.47
2026-07-31 12.49 5.68 0.41 9.2
2026-07-30 12.46 4.61 0.36 6.4
2026-07-29 12.05 12.02 0.71 71.2
2026-07-28 12.94 19.18 1.05 94
2026-07-27 14.14 13.55 0.78 82.73
2026-07-24 14.35 12.91 0.75 80
2026-07-23 14.49 3.81 0.32 4.4
2026-07-22 14.82 8.64 0.55 34.4
2026-07-21 14.58 9.53 0.59 46.4
2026-07-20 14.44 11.58 0.69 66.27
2026-07-17 14.34 12.02 0.71 70.8
2026-07-16 14.28 15.78 0.89 86.4
2026-07-15 14.5 9.17 0.57 41.2
2026-07-14 14.51 8.37 0.54 32.8
2026-07-13 14.33 13.78 0.79 81.12
2026-07-10 14.35 9.18 0.57 41.2
2026-07-09 14.43 14.41 0.82 82.4
2026-07-08 14.25 17.9 0.99 90.8
2026-07-07 13.72 35.47 1.82 98.4
2026-07-02 14.31 34.91 1.79 98.41