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Castle Biosciences CSTL 35.34 -1.44 -3.92%

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

CSTL / Comparative study

3 signals / 510 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 1.37
38.86
Mean
19.94
Window
+80.7%
ATM IV z -0.08
0.68
Mean
0.7
Window
-7.3%
IV Percentile z 0.13
50.19
Mean
46.39
Window
-9.7%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.88 0.75
ATM IV 0.88 1.00 0.84
IV Percent... 0.75 0.84 1.00
Source observations

Data inspector

1-50 of 510
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-18 35.34 38.86 0.68 50.19
2026-09-17 36.78 7.58 0.42 1.54
2026-09-16 35.48 22.32 0.54 16.6
2026-09-15 35.5 3.01 0.39 0.39
2026-09-14 33.44 30.07 0.61 28.68
2026-09-11 32.33 33.08 0.63 35.91
2026-09-10 32.32 22.38 0.54 17.76
2026-09-09 32.31 36.98 0.66 46.72
2026-09-08 32.76 27.95 0.59 27.8
2026-09-07 32.91 42.36 0.71 58.91
2026-09-04 32.91 39.08 0.68 51.74
2026-09-03 32.65 42.65 0.71 59.85
2026-09-02 33.42 12.2 0.46 2.32
2026-09-01 33.44 24.45 0.56 24.03
2026-08-31 33.03 33.41 0.64 38.52
2026-08-28 33.5 16.36 0.5 11.24
2026-08-27 34.26 38.9 0.68 51.55
2026-08-26 34.08 34.4 0.64 42.64
2026-08-25 35 22.21 0.54 20.93
2026-08-24 33.47 33.47 0.64 40.08
2026-08-21 34.2 21.16 0.53 20.54
2026-08-20 32.93 23.5 0.55 23.26
2026-08-19 32.32 23.23 0.55 22.09
2026-08-18 29.03 40.87 0.7 56.98
2026-08-17 29.95 24.33 0.56 24.9
2026-08-14 29.62 26.29 0.58 28.68
2026-08-13 30.55 25.57 0.57 27.52
2026-08-12 31.43 27.31 0.59 29.46
2026-08-11 32.24 27.84 0.59 29.84
2026-08-10 32.35 30.78 0.61 33.85
2026-08-07 32.03 27.91 0.59 30.62
2026-08-06 30.47 35.19 0.65 44.57
2026-08-05 30.4 38.6 0.68 51.55
2026-08-04 31.18 12.97 0.47 4.65
2026-08-03 30.39 33.41 0.64 40.47
2026-07-31 28 51.99 0.9 90.31
2026-07-30 26.79 16.7 0.65 44.57
2026-07-29 24.46 39.81 1.05 98.06
2026-07-28 23.89 31.22 0.9 90.7
2026-07-27 24.44 33.12 0.94 93.39
2026-07-24 24.68 27.53 0.84 83.33
2026-07-23 25.48 29.77 0.88 87.6
2026-07-22 24.81 30.7 0.9 90.7
2026-07-21 24.51 26.03 0.81 80.23
2026-07-20 23.89 33 0.94 93.39
2026-07-17 24.16 25.05 0.8 76.36
2026-07-16 24.23 27.05 0.83 81.78
2026-07-15 24.02 27.22 0.84 82.56
2026-07-14 23.12 24.08 0.78 72.48
2026-07-13 22.98 33.82 0.95 93.39