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Ziff Davis ZD 57.49 -1.64 -2.77%

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

ZD / Comparative study

3 signals / 504 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -1.04
15.52
Mean
32.05
Window
+14.8%
ATM IV z -1.32
0.36
Mean
0.56
Window
-5.5%
IV Percentile z -2.20
1.58
Mean
54.6
Window
-96.6%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.96 0.77
ATM IV 0.96 1.00 0.83
IV Percent... 0.77 0.83 1.00
Source observations

Data inspector

1-50 of 504
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-18 57.49 15.52 0.36 1.58
2026-09-17 59.13 30.12 0.46 11.07
2026-09-16 58.75 33.03 0.48 18.97
2026-09-15 59.21 42.23 0.53 38.74
2026-09-14 57.35 32.07 0.47 15.87
2026-09-11 56.22 24.63 0.42 6.72
2026-09-10 55.29 32.19 0.47 15.81
2026-09-09 55.32 31.92 0.47 14.23
2026-09-08 55.73 30.21 0.46 11.46
2026-09-07 55.7 30.94 0.46 12.7
2026-09-04 55.7 28.3 0.45 8.7
2026-09-03 56.31 20.73 0.4 5.14
2026-09-02 56.69 26.42 0.43 6.72
2026-09-01 55.24 30.46 0.46 10.71
2026-08-31 55.15 38.94 0.51 29.88
2026-08-28 55.82 30.65 0.46 11.11
2026-08-27 55.82 32.23 0.47 14.68
2026-08-26 55.61 32.63 0.47 15.08
2026-08-25 55.41 34.11 0.48 19.44
2026-08-24 55.73 33.45 0.48 17.53
2026-08-21 56.08 26.35 0.43 6.35
2026-08-20 55.4 34.14 0.48 19.84
2026-08-19 55.5 33.01 0.48 17.06
2026-08-18 55.09 31.68 0.47 12.7
2026-08-17 54.31 39.47 0.52 30.68
2026-08-14 55.38 44.93 0.55 43.25
2026-08-13 55.91 27.9 0.44 6.75
2026-08-12 54.94 41.69 0.53 36.9
2026-08-11 53.49 40.17 0.52 33.33
2026-08-10 54.31 47.94 0.57 49
2026-08-07 53.87 33.11 0.48 19.44
2026-08-06 50.95 45.18 0.55 45.24
2026-08-05 52.72 55.74 0.62 65.87
2026-08-04 55.38 48.46 0.57 50.4
2026-08-03 54.01 54.25 0.61 62.15
2026-07-31 53.08 62.9 0.66 77.78
2026-07-30 52.61 70.93 0.71 88.49
2026-07-29 54.27 53.62 0.61 59.92
2026-07-28 52.93 43.27 0.6 57.94
2026-07-27 52.36 45.68 0.62 66.93
2026-07-24 51.6 59.4 0.73 88.1
2026-07-23 51.81 43.78 0.61 59.92
2026-07-22 52.22 45.78 0.62 67.06
2026-07-21 52.39 43.86 0.61 60.32
2026-07-20 54.38 52.14 0.67 79.28
2026-07-17 53.98 46.4 0.63 68.25
2026-07-16 53.63 40.52 0.58 52.78
2026-07-15 52.1 43.04 0.6 57.14
2026-07-14 51.94 46.22 0.62 67.06
2026-07-13 51.87 45.01 0.62 63.35