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Amtech Systems Inc ASYS 14.48 0.62 4.47%

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

ASYS / Comparative study

3 signals / 503 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 0.31
23.51
Mean
18.63
Window
-56.7%
ATM IV z -0.48
0.88
Mean
1.18
Window
-63.3%
IV Percentile z -1.08
25.79
Mean
53.49
Window
-73.3%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.76 0.70
ATM IV 0.76 1.00 0.71
IV Percent... 0.70 0.71 1.00
Source observations

Data inspector

1-50 of 503
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-18 14.48 23.51 0.88 25.79
2026-09-17 13.86 23.69 0.88 26.98
2026-09-16 13.85 33.95 1.06 56.35
2026-09-15 13.83 21.89 0.85 21.43
2026-09-14 13.61 34.02 1.06 56.57
2026-09-11 14.91 41.52 1.18 78.97
2026-09-10 15.06 26.18 0.92 34.92
2026-09-09 15.26 28.11 0.96 40.87
2026-09-08 15.49 22.52 0.86 24.6
2026-09-07 14.95 21.25 0.84 21.12
2026-09-04 14.95 21.29 0.84 21.03
2026-09-03 14.37 22.26 0.86 23.41
2026-09-02 14.6 21.38 0.84 21.83
2026-09-01 14.52 28.27 0.96 40.64
2026-08-31 14.62 27.73 0.95 39.6
2026-08-28 15.06 17.1 0.77 10.76
2026-08-27 15.83 19.58 0.81 15.54
2026-08-26 15.17 23.58 0.88 27.09
2026-08-25 14.25 37.27 1.11 67.73
2026-08-24 14 45.53 1.25 86.4
2026-08-21 14.63 28.99 0.97 40.64
2026-08-20 14.62 18.48 0.8 12.35
2026-08-19 14.82 30.42 1 45.82
2026-08-18 16.88 23.83 0.89 27.89
2026-08-17 16.86 21.1 0.84 20.4
2026-08-14 16.04 24.81 0.9 30.28
2026-08-13 16 27.04 0.94 37.45
2026-08-12 15.94 25.16 0.91 30.68
2026-08-11 15.4 15.45 0.75 7.97
2026-08-10 15.09 30.08 0.99 44.8
2026-08-07 15.53 35.37 1.08 59.76
2026-08-06 14.95 32.07 1.02 48.61
2026-08-05 16.01 36.61 1.1 64.54
2026-08-04 17.44 29.96 0.99 44.62
2026-08-03 15.7 47.48 1.28 90
2026-07-31 15.34 42.01 1.19 79.68
2026-07-30 14.79 40.39 1.16 75.7
2026-07-29 13.65 39.32 1.15 74.9
2026-07-28 14.68 47.47 1.28 90.04
2026-07-27 15.41 50.58 1.33 93.6
2026-07-24 15.89 44.95 1.24 85.66
2026-07-23 17.25 51.14 1.34 94.42
2026-07-22 17.34 45.61 1.25 88.05
2026-07-21 17.98 35.41 1.08 62.95
2026-07-20 16.32 36.22 1.09 66.8
2026-07-17 16.67 37.43 1.11 70.92
2026-07-16 16.71 35.54 1.08 64.14
2026-07-15 18.26 34.88 1.07 61.75
2026-07-14 18.68 37.67 1.12 71.71
2026-07-13 18.01 40.65 1.17 78.8