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Spok Holdings SPOK 11.76 0.01 0.09%

Previous-day view · Fri Nov 6 close. You are previewing the previous trading day. Subscribe to see today live and every other date — Trader is $59/mo. Sign up Sign in
Group
Window
Scale
Plotted 3/8
Metric library

Volatility

Interactive timeline

SPOK / Comparative study

3 signals / 494 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z 0.93
39.41
Mean
23.82
Window
--
ATM IV z 1.87
1.33
Mean
0.65
Window
+513.8%
IV Percentile z 1.50
96.33
Mean
53.29
Window
--
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.91 0.84
ATM IV 0.91 1.00 0.84
IV Percent... 0.84 0.84 1.00
Source observations

Data inspector

1-50 of 494
  • 1 / 10
Date Close IV Rank ATM IV IV Percentile
2026-11-06 11.76 39.41 1.33 96.33
2026-11-05 11.75 37.83 1.28 95.92
2026-11-04 12.07 39.8 1.34 96.46
2026-11-03 12 37.79 1.28 95.67
2026-11-02 12.08 37.38 1.27 95.65
2026-10-30 11.99 33.46 1.14 92.91
2026-10-29 11.78 30.73 1.06 91.73
2026-10-28 10.18 19.84 0.73 74.8
2026-10-27 10.11 10.5 0.44 14.96
2026-10-26 10.21 11.5 0.47 20.16
2026-10-23 10.3 11.69 0.47 20.87
2026-10-22 10.71 15.95 0.61 51.18
2026-10-21 10.36 11.83 0.48 22.05
2026-10-20 10.55 10.01 0.42 10.63
2026-10-19 10.43 -- -- --
2026-10-15 10.73 100 3.2 100
2026-10-14 10.74 100 2.32 100
2026-10-13 10.83 100 1.99 100
2026-10-12 10.74 93.46 1.67 98.82
2026-10-09 10.73 69.04 1.26 95.7
2026-10-08 11.06 39.05 0.76 77.34
2026-10-07 11.05 36.68 0.72 74.22
2026-10-06 10.96 35.92 0.71 73.05
2026-10-05 10.97 33.85 0.68 60
2026-10-02 10.89 30.45 0.62 55.47
2026-10-01 10.67 43.54 0.84 82.03
2026-09-30 10.49 37.04 0.73 74.61
2026-09-29 10.41 33.46 0.67 60.55
2026-09-28 10.37 24.72 0.53 34.12
2026-09-25 10.46 14.42 0.35 6.25
2026-09-24 10.35 18.45 0.42 12.94
2026-09-23 10.4 21.86 0.48 23.92
2026-09-22 10.53 29.63 0.61 54.51
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
2026-09-04 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