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National Healthcare Corp NHC 225.5 1.03 0.46%

Previous-day view · Mon Sep 14 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

NHC / Comparative study

3 signals / 501 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -0.42
5.21
Mean
11.12
Window
+128.5%
ATM IV z -0.49
0.3
Mean
0.48
Window
+17.5%
IV Percentile z -0.42
37.1
Mean
49.33
Window
+143.1%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.96 0.68
ATM IV 0.96 1.00 0.72
IV Percent... 0.68 0.72 1.00
Source observations

Data inspector

1-50 of 501
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-14 225.5 5.21 0.3 37.1
2026-09-11 224.47 5.01 0.29 34.14
2026-09-10 224.92 5.33 0.3 39.76
2026-09-09 227.24 7.61 0.37 73.9
2026-09-08 220.97 7.42 0.37 71.49
2026-09-07 218.64 7.73 0.37 76.61
2026-09-04 218.64 7.28 0.36 71.08
2026-09-03 221.64 6.06 0.33 52.61
2026-09-02 217.34 6.49 0.34 60.64
2026-09-01 218.97 7.58 0.37 73.79
2026-08-31 216.53 5.67 0.31 47.37
2026-08-28 222.7 5.43 0.31 43.15
2026-08-27 222.26 5.66 0.31 45.56
2026-08-26 225.09 4.93 0.29 34.27
2026-08-25 224.73 6.57 0.34 60.08
2026-08-24 228.38 6.31 0.33 56.28
2026-08-21 233.4 5.89 0.32 50
2026-08-20 236.75 6.48 0.34 57.26
2026-08-19 234.04 5.5 0.31 43.55
2026-08-18 234.17 7.47 0.37 68.95
2026-08-17 228.2 6.08 0.33 51.82
2026-08-14 223.59 5.55 0.31 43.95
2026-08-13 219.84 7.17 0.36 65.73
2026-08-12 221.64 5.86 0.32 49.19
2026-08-11 216.69 7.52 0.37 68.15
2026-08-10 221.04 6.34 0.33 54.66
2026-08-07 215.54 6.79 0.35 61.29
2026-08-06 219.45 7.6 0.37 67.34
2026-08-05 221.45 6.72 0.35 59.68
2026-08-04 208.2 8.11 0.39 72.18
2026-08-03 222.76 8.63 0.4 79.35
2026-07-31 226.03 8.3 0.39 73.39
2026-07-30 228.97 9.1 0.41 81.05
2026-07-29 228.66 9.43 0.42 81.85
2026-07-28 231 8.55 0.4 77.82
2026-07-27 226.09 8.71 0.4 78.95
2026-07-24 225.69 7.77 0.38 69.35
2026-07-23 221.51 8.35 0.39 75
2026-07-22 220.34 8.46 0.4 76.21
2026-07-21 222.85 8.53 0.4 76.61
2026-07-20 219.88 9.09 0.41 79.35
2026-07-17 228.16 8.22 0.39 72.18
2026-07-16 224.64 7.86 0.38 70.97
2026-07-15 216.17 8.32 0.39 73.39
2026-07-14 210.79 11.16 0.48 81.85
2026-07-13 207.87 9.62 0.43 80.16
2026-07-10 210.38 7.72 0.37 69.76
2026-07-09 214.18 7.63 0.37 68.55
2026-07-08 211.78 7.7 0.37 68.55
2026-07-07 216.4 7.33 0.36 66.13