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CoStar Group Inc CSGP 29.13 -0.17 -0.56%

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

CSGP / Comparative study

3 signals / 502 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -0.30
43.51
Mean
51.27
Window
+41.6%
ATM IV z 0.52
0.48
Mean
0.41
Window
+65.6%
IV Percentile z -1.23
31.47
Mean
66.47
Window
-53.9%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.80 0.89
ATM IV 0.80 1.00 0.70
IV Percent... 0.89 0.70 1.00
Source observations

Data inspector

1-50 of 502
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-18 29.13 43.51 0.48 31.47
2026-09-17 29.3 43.12 0.48 31.47
2026-09-16 30.36 44.51 0.48 32.67
2026-09-15 31.56 52.31 0.53 63.35
2026-09-14 31.52 46.14 0.49 37.2
2026-09-11 30.46 40.63 0.46 32.27
2026-09-10 29.49 45.8 0.49 36.65
2026-09-09 29.58 46.34 0.5 39.04
2026-09-08 30.34 46.95 0.5 41.43
2026-09-07 30.91 52.85 0.53 64.8
2026-09-04 30.91 47.27 0.5 42.63
2026-09-03 31.68 44.81 0.49 36.65
2026-09-02 31.26 44.7 0.49 36.65
2026-09-01 31.98 45.33 0.49 37.6
2026-08-31 32.07 47.96 0.5 44.18
2026-08-28 32.22 44.06 0.48 36.8
2026-08-27 31.34 35.84 0.43 32.4
2026-08-26 32.14 51.33 0.52 61.2
2026-08-25 32.81 43.9 0.48 37.2
2026-08-24 32.84 50.73 0.52 58.23
2026-08-21 32.26 47.54 0.5 44.8
2026-08-20 32.26 47.45 0.5 44.4
2026-08-19 33.73 50.44 0.52 58.4
2026-08-18 31.38 45.93 0.49 40.8
2026-08-17 31.35 46.58 0.5 43.37
2026-08-14 32.38 42.89 0.47 39.6
2026-08-13 33.05 51.42 0.52 62
2026-08-12 30.5 39.97 0.46 39.6
2026-08-11 31.12 46.2 0.49 42.8
2026-08-10 31.48 48.59 0.51 46.59
2026-08-07 30.24 52.39 0.53 64.4
2026-08-06 29.58 55.22 0.55 72
2026-08-05 30.21 54.45 0.54 69.6
2026-08-04 29.82 49.22 0.51 49.2
2026-08-03 30.03 59.81 0.57 78.31
2026-07-31 28.76 60.28 0.58 79.2
2026-07-30 29.46 57.46 0.56 76.8
2026-07-29 29.83 68.58 0.62 85.2
2026-07-28 30.33 100 0.81 100
2026-07-27 29.17 95.27 0.76 99.6
2026-07-24 27.66 87.41 0.72 98.8
2026-07-23 27.14 80.51 0.68 96.8
2026-07-22 27.69 80.39 0.68 96.8
2026-07-21 28.5 81.13 0.68 97.2
2026-07-20 29.68 76.82 0.66 95.58
2026-07-17 29.78 75.18 0.65 94
2026-07-16 30.37 75.2 0.65 94.4
2026-07-15 28.49 74.08 0.64 92.4
2026-07-14 27.68 78.92 0.67 96.8
2026-07-13 28.77 73.89 0.64 92.37