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Spok Holdings SPOK 10.43 0.04 0.38%

SPOK Historical Options Analysis

Explore SPOK (Spok Holdings) historical options data, volatility, Greeks and positioning. Compare signals over time in the free Historical Lab preview.

Previous-day view · Mon Sep 21 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

SPOK / Comparative study

3 signals / 504 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -0.58
14.08
Mean
23.24
Window
-19.6%
ATM IV z -0.85
0.35
Mean
0.62
Window
-28.8%
IV Percentile z -1.66
6.3
Mean
53.22
Window
-91.3%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.89 0.83
ATM IV 0.89 1.00 0.86
IV Percent... 0.83 0.86 1.00
Source observations

Data inspector

1-50 of 504
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-21 10.43 14.08 0.35 6.3
2026-09-18 10.39 28.22 0.58 48.63
2026-09-17 10.4 23.86 0.51 31.76
2026-09-16 10.67 19.86 0.44 20
2026-09-15 10.7 21 0.46 23.92
2026-09-14 10.88 30.27 0.62 55.91
2026-09-11 10.65 25.12 0.53 36.47
2026-09-10 10.63 26.47 0.55 42.35
2026-09-09 10.57 28.08 0.58 47.45
2026-09-08 10.64 35.09 0.7 63.92
2026-09-07 10.71 36.72 0.73 74.41
2026-09-04 10.71 35.23 0.7 64.71
2026-09-03 10.68 32.08 0.65 60
2026-09-02 10.56 33.91 0.68 61.96
2026-09-01 10.56 34.46 0.69 63.39
2026-08-31 10.51 26.33 0.55 44.66
2026-08-28 10.65 34.67 0.69 64.17
2026-08-27 10.36 26.65 0.56 45.67
2026-08-26 10.41 27.21 0.57 47.64
2026-08-25 10.57 30.25 0.62 58.66
2026-08-24 10.62 30.43 0.62 58.89
2026-08-21 10.31 21.33 0.47 30.31
2026-08-20 10.44 23.68 0.51 36.22
2026-08-19 10.48 23.99 0.51 37.8
2026-08-18 10.97 31.86 0.64 60.24
2026-08-17 10.99 31.5 0.64 59.29
2026-08-14 10.96 37.75 0.74 74.8
2026-08-13 11 45.21 0.87 82.68
2026-08-12 10.98 66.5 1.22 94.88
2026-08-11 11.44 29.31 0.6 57.48
2026-08-10 11.33 58.89 1.09 93.28
2026-08-07 11.52 8.32 0.25 7.09
2026-08-06 11.3 56.82 1.06 92.91
2026-08-05 11.24 56.79 1.06 92.91
2026-08-04 11.21 58.12 1.08 93.31
2026-08-03 11.1 47.27 0.9 87.75
2026-07-31 10.9 39.58 0.77 79.13
2026-07-30 10.75 25.1 0.6 59.06
2026-07-29 10.96 33.16 0.76 77.56
2026-07-28 10.89 31.27 0.72 76.38
2026-07-27 10.81 82.09 1.71 98.42
2026-07-24 10.59 24.04 0.58 54.33
2026-07-23 10.51 19.89 0.5 38.58
2026-07-22 10.65 14.89 0.4 22.44
2026-07-21 10.66 40.77 0.91 87.8
2026-07-20 10.65 40.26 0.9 86.96
2026-07-17 10.64 39 0.87 84.65
2026-07-16 10.73 42.85 0.95 88.58
2026-07-15 10.53 39.75 0.89 85.43
2026-07-14 10.52 38.73 0.87 84.25