Prothena Corporation plc Ordinary Shares PRTA 8.75 0.17 1.98%
PRTA Historical Options Analysis
Explore PRTA (Prothena Corporation plc Ordinary Shares) historical options data, volatility, Greeks and positioning. Compare signals over time in the free Historical Lab preview.
Window
Scale
Plotted 3/8
Metric library
Volatility
Interactive timeline
PRTA / Comparative study
3 signals / 505 sessions
Window statistics
Signal snapshot
Current value vs. selected history
IV Rank
z -0.02
16.63
Mean
17.04
Window
+459.9%
ATM IV
z -0.42
0.73
Mean
0.95
Window
+22.4%
IV Percentile
z 0.36
61.18
Mean
50.45
Window
+324.9%
Relationship matrix
Correlation
Pearson r
| Signal | IV Rank | ATM IV | IV Percent... |
|---|---|---|---|
| IV Rank | 1.00 | 0.96 | 0.71 |
| ATM IV | 0.96 | 1.00 | 0.72 |
| IV Percent... | 0.71 | 0.72 | 1.00 |
Source observations
Data inspector
1-50 of 505
- 1 / 11
| Date | Close | IV Rank | ATM IV | IV Percentile |
|---|---|---|---|---|
| 2026-09-21 | 8.75 | 16.63 | 0.73 | 61.18 |
| 2026-09-18 | 8.58 | 16.38 | 0.73 | 60.55 |
| 2026-09-17 | 8.46 | 45.39 | 1.25 | 94.14 |
| 2026-09-16 | 8.24 | 94.59 | 2.13 | 99.61 |
| 2026-09-15 | 8.33 | 49.38 | 1.32 | 96.09 |
| 2026-09-14 | 8.86 | 17.83 | 0.75 | 66.67 |
| 2026-09-11 | 8.93 | 55.48 | 1.43 | 97.66 |
| 2026-09-10 | 9.02 | 18.34 | 0.76 | 68.36 |
| 2026-09-09 | 9.3 | 27.15 | 0.92 | 85.94 |
| 2026-09-08 | 9.54 | 8.28 | 0.58 | 23.83 |
| 2026-09-07 | 9.82 | 3.32 | 0.49 | 4.31 |
| 2026-09-04 | 9.82 | 3.2 | 0.49 | 3.91 |
| 2026-09-03 | 9.6 | 9.45 | 0.6 | 28.52 |
| 2026-09-02 | 9.69 | 20.31 | 0.8 | 73.44 |
| 2026-09-01 | 9.61 | 28.12 | 0.94 | 87.06 |
| 2026-08-31 | 9.35 | 4.07 | 0.51 | 5.51 |
| 2026-08-28 | 9.33 | 0.97 | 0.45 | 0.78 |
| 2026-08-27 | 9.09 | 9.8 | 0.61 | 30.59 |
| 2026-08-26 | 9.25 | 2.95 | 0.49 | 2.35 |
| 2026-08-25 | 9.42 | 0 | 0.43 | 0 |
| 2026-08-24 | 9.39 | 4.28 | 0.51 | 5.91 |
| 2026-08-21 | 9.45 | 5.01 | 0.53 | 9.02 |
| 2026-08-20 | 9.03 | 2.73 | 0.49 | 1.96 |
| 2026-08-19 | 9.29 | 1.6 | 0.47 | 0.39 |
| 2026-08-18 | 8.71 | 2.81 | 0.49 | 1.57 |
| 2026-08-17 | 8.88 | 4.48 | 0.52 | 5.91 |
| 2026-08-14 | 8.86 | 1.82 | 0.47 | 0.39 |
| 2026-08-13 | 9.08 | 0 | 0.44 | 0 |
| 2026-08-12 | 9.26 | 2.59 | 0.52 | 5.1 |
| 2026-08-11 | 9.22 | 3.88 | 0.54 | 9.02 |
| 2026-08-10 | 9.12 | 2.94 | 0.52 | 5.51 |
| 2026-08-07 | 8.76 | 0 | 0.47 | 0 |
| 2026-08-06 | 8.58 | 5.44 | 0.57 | 16.08 |
| 2026-08-05 | 8.49 | 5.61 | 0.57 | 16.47 |
| 2026-08-04 | 8.49 | 6.99 | 0.6 | 20.78 |
| 2026-08-03 | 8.33 | 6.72 | 0.59 | 20.08 |
| 2026-07-31 | 8.12 | 25.1 | 0.91 | 79.61 |
| 2026-07-30 | 8.41 | 14.81 | 0.73 | 57.65 |
| 2026-07-29 | 8.56 | 32.81 | 1.05 | 92.16 |
| 2026-07-28 | 8.56 | 19.79 | 0.82 | 69.41 |
| 2026-07-27 | 8.7 | 4 | 0.55 | 9.45 |
| 2026-07-24 | 8.75 | 9.04 | 0.63 | 28.63 |
| 2026-07-23 | 8.53 | 5.91 | 0.58 | 16.47 |
| 2026-07-22 | 8.44 | 21.72 | 0.86 | 72.16 |
| 2026-07-21 | 8.75 | 9.26 | 0.64 | 28.24 |
| 2026-07-20 | 8.67 | 12.54 | 0.7 | 46.06 |
| 2026-07-17 | 8.66 | 19.03 | 0.81 | 65.49 |
| 2026-07-16 | 8.47 | 24.56 | 0.9 | 76.08 |
| 2026-07-15 | 8.43 | 19.31 | 0.81 | 66.27 |
| 2026-07-14 | 8.64 | 18.47 | 0.8 | 64.71 |