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TransAlta Corporation TAC 11.95 0.45 3.91%

Previous-day view · Wed Sep 16 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

TAC / Comparative study

3 signals / 502 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -0.28
11.65
Mean
15.13
Window
+1356.2%
ATM IV z 0.01
0.49
Mean
0.49
Window
+68.3%
IV Percentile z -0.81
35.86
Mean
56.68
Window
+90.7%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.76 0.53
ATM IV 0.76 1.00 0.73
IV Percent... 0.53 0.73 1.00
Source observations

Data inspector

1-50 of 502
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-16 11.95 11.65 0.49 35.86
2026-09-15 11.5 1.67 0.36 1.99
2026-09-14 11.79 0.74 0.35 0.8
2026-09-11 12.08 0.64 0.35 0.4
2026-09-10 12.18 2.37 0.37 1.2
2026-09-09 12.35 1.51 0.36 0.8
2026-09-08 12.41 1.16 0.36 0.4
2026-09-07 11.91 6.61 0.43 7.6
2026-09-04 11.96 4.97 0.41 3.98
2026-09-03 11.81 12.19 0.5 37.85
2026-09-02 11.84 12.04 0.5 37.85
2026-09-01 11.77 11.63 0.49 36.4
2026-08-31 12.09 8.76 0.46 14.86
2026-08-28 12.19 7.56 0.43 9.2
2026-08-27 12.5 5.41 0.41 5.2
2026-08-26 12.64 6.24 0.42 7.6
2026-08-25 12.25 7.04 0.43 8.8
2026-08-24 12.1 3.14 0.38 3.21
2026-08-21 12.21 10.46 0.47 18.4
2026-08-20 12.59 5.42 0.41 6.8
2026-08-19 12.38 6.15 0.42 8
2026-08-18 12.47 4.9 0.4 6.4
2026-08-17 12.71 16.3 0.55 65.06
2026-08-14 12.79 11.96 0.49 28.8
2026-08-13 12.61 0.47 0.34 1.2
2026-08-12 12.4 21.55 0.62 88.8
2026-08-11 12.48 11.24 0.48 25.6
2026-08-10 12.26 10.53 0.47 20.48
2026-08-07 12.43 8.07 0.44 14.8
2026-08-06 12.48 21.7 0.62 89.6
2026-08-05 12.67 8.85 0.45 17.6
2026-08-04 12.76 13.25 0.51 40.4
2026-08-03 12.34 11.36 0.49 27.31
2026-07-31 12.5 5.52 0.41 10.8
2026-07-30 12.86 24.56 0.66 92
2026-07-29 12.43 19.19 0.59 82.8
2026-07-28 12.74 28.76 0.72 94
2026-07-27 13.45 19.16 0.59 82.73
2026-07-24 13.72 13.09 0.51 40.8
2026-07-23 14.11 16.06 0.55 64.8
2026-07-22 14.04 14.97 0.53 58.4
2026-07-21 13.99 15.39 0.54 60.4
2026-07-20 13.72 14.28 0.52 49
2026-07-17 13.26 14.86 0.53 54.4
2026-07-16 13.24 14.93 0.53 57.2
2026-07-15 13.62 17.52 0.57 74.8
2026-07-14 13.93 15.64 0.54 62.8
2026-07-13 13.93 19.29 0.59 83.53
2026-07-10 14.22 13.35 0.51 43.2
2026-07-09 14.52 14.15 0.52 49.6