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Bel Fuse Inc BELFB 250.36 7.36 3.03%

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

BELFB / Comparative study

3 signals / 503 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 0.49
27.2
Mean
19.89
Window
-33.5%
ATM IV z -0.40
0.48
Mean
0.56
Window
-24.1%
IV Percentile z -0.82
28.97
Mean
52.48
Window
-64.4%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.57 0.69
ATM IV 0.57 1.00 0.75
IV Percent... 0.69 0.75 1.00
Source observations

Data inspector

1-50 of 503
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-11 250.36 27.2 0.48 28.97
2026-09-10 243 36.13 0.53 60.32
2026-09-09 246.01 39.48 0.56 66.27
2026-09-08 247.76 35.64 0.53 60.71
2026-09-07 247.16 38.03 0.55 63.75
2026-09-04 243.79 34.5 0.52 57.14
2026-09-03 239.89 33.03 0.52 53.17
2026-09-02 240.71 32.92 0.52 52.38
2026-09-01 243.42 33.99 0.52 56.18
2026-08-31 249.28 23.33 0.46 24
2026-08-28 248.69 18.78 0.43 19.12
2026-08-27 257.64 30.98 0.5 43.03
2026-08-26 255.11 31.32 0.51 44.22
2026-08-25 250.09 32.42 0.51 50.6
2026-08-24 247.98 36.68 0.54 61.6
2026-08-21 255.46 31.11 0.5 45.02
2026-08-20 262.43 33.46 0.52 55.38
2026-08-19 263.87 33.06 0.52 54.58
2026-08-18 275.97 36.32 0.54 61.75
2026-08-17 297.91 32.44 0.51 52.4
2026-08-14 290.08 29.28 0.49 42.63
2026-08-13 286.01 34.54 0.53 58.17
2026-08-12 294.45 32.29 0.51 52.99
2026-08-11 290.1 34.9 0.53 59.76
2026-08-10 284.21 43.4 0.58 74.8
2026-08-07 291.59 34.74 0.53 59.76
2026-08-06 289.4 39.18 0.55 66.14
2026-08-05 294.01 41.55 0.57 71.31
2026-08-04 300.64 42.55 0.57 73.31
2026-08-03 274.83 40.59 0.56 70
2026-07-31 271.97 59.74 0.68 94.82
2026-07-30 253.41 43.16 0.58 73.71
2026-07-29 242.43 66.76 0.72 98.41
2026-07-28 250.97 62.5 0.7 96.81
2026-07-27 270.26 65.26 0.72 98.4
2026-07-24 272.8 58.25 0.67 94.82
2026-07-23 285.92 56.07 0.66 93.23
2026-07-22 282.06 53.55 0.64 92.43
2026-07-21 281.51 50.37 0.62 89.24
2026-07-20 266.11 52.11 0.63 91.2
2026-07-17 270.56 56.08 0.66 93.63
2026-07-16 266.8 47.99 0.61 87.65
2026-07-15 275 47.21 0.6 85.26
2026-07-14 279.39 47.88 0.61 87.25
2026-07-13 263.26 47.82 0.61 87.2
2026-07-10 272.58 44.38 0.59 80.88
2026-07-09 267.69 47.27 0.6 86.45
2026-07-08 258.67 46.73 0.6 86.45
2026-07-07 251.53 52.33 0.64 92.03
2026-07-02 266.94 40.18 0.56 76.59