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Spero Therapeutics SPRO 1.02 0.01 0.99%
Window
Scale
Plotted 3/8
Metric library
Volatility
Interactive timeline
SPRO / Comparative study
3 signals / 490 sessions
Window statistics
Signal snapshot
Current value vs. selected history
IV Rank
z 0.53
34.96
Mean
22.57
Window
-34.6%
ATM IV
z 1.05
4.11
Mean
2.25
Window
-16.8%
IV Percentile
z 1.17
92.28
Mean
52.19
Window
+1.6%
Relationship matrix
Correlation
Pearson r
| Signal | IV Rank | ATM IV | IV Percent... |
|---|---|---|---|
| IV Rank | 1.00 | 0.80 | 0.79 |
| ATM IV | 0.80 | 1.00 | 0.71 |
| IV Percent... | 0.79 | 0.71 | 1.00 |
Source observations
Data inspector
1-50 of 490
- 1 / 10
| Date | Close | IV Rank | ATM IV | IV Percentile |
|---|---|---|---|---|
| 2026-11-11 | 1.02 | 34.96 | 4.11 | 92.28 |
| 2026-11-10 | 1.01 | 34.38 | 4.06 | 92.28 |
| 2026-11-09 | 1.07 | 31.47 | 3.76 | 91.43 |
| 2026-11-06 | 1.03 | 32.05 | 3.82 | 92.28 |
| 2026-11-05 | 1.02 | 32.02 | 3.81 | 92.28 |
| 2026-11-04 | 1.07 | 29.62 | 3.57 | 91.76 |
| 2026-11-03 | 1.04 | 30.53 | 3.66 | 92.16 |
| 2026-11-02 | 1.04 | 6.78 | 1.22 | 39.76 |
| 2026-10-30 | 1.06 | 20.34 | 2.61 | 84.65 |
| 2026-10-29 | 1.11 | 18.91 | 2.46 | 84.58 |
| 2026-10-28 | 1.17 | 17.56 | 2.33 | 81.35 |
| 2026-10-27 | 1.14 | 18.29 | 2.4 | 83.73 |
| 2026-10-26 | 1.07 | 18.24 | 2.4 | 83.27 |
| 2026-10-23 | 1.11 | 16.57 | 2.22 | 81.35 |
| 2026-10-22 | 1.13 | 15.95 | 2.16 | 79.76 |
| 2026-10-21 | 1.17 | 15.13 | 2.08 | 78.57 |
| 2026-10-20 | 1.22 | 23.81 | 2.97 | 88.1 |
| 2026-10-19 | 1.12 | 14.97 | 2.06 | 78.49 |
| 2026-10-15 | 1.13 | 13.5 | 1.91 | 75.4 |
| 2026-10-14 | 1.12 | 13.7 | 1.93 | 76.19 |
| 2026-10-13 | 1.15 | 13.12 | 1.87 | 75 |
| 2026-10-12 | 1.18 | 12.56 | 1.81 | 73.71 |
| 2026-10-09 | 1.2 | 20.66 | 2.64 | 85.71 |
| 2026-10-08 | 1.14 | 4.59 | 0.99 | 30.95 |
| 2026-10-07 | 1.17 | 15.5 | 2.11 | 80.16 |
| 2026-10-06 | 1.19 | 15.04 | 2.07 | 79.76 |
| 2026-10-05 | 1.16 | 4.17 | 0.95 | 24.3 |
| 2026-10-02 | 1.19 | 7.07 | 1.25 | 46.83 |
| 2026-10-01 | 1.26 | 28.65 | 3.47 | 91.67 |
| 2026-09-30 | 1.21 | 27.2 | 3.32 | 90.48 |
| 2026-09-29 | 1.2 | 26.16 | 3.21 | 90.48 |
| 2026-09-28 | 1.19 | 20.69 | 2.65 | 87.25 |
| 2026-09-25 | 1.23 | 17.46 | 2.32 | 84.52 |
| 2026-09-24 | 1.25 | 16.33 | 2.2 | 83.67 |
| 2026-09-23 | 1.26 | 24.95 | 3.08 | 90.04 |
| 2026-09-22 | 1.36 | 42.08 | 4.85 | 92.43 |
| 2026-09-21 | 1.14 | 70.43 | 7.76 | 98.8 |
| 2026-09-18 | 1.13 | 67.06 | 7.41 | 98.8 |
| 2026-09-17 | 1.12 | 65.85 | 7.29 | 98.8 |
| 2026-09-16 | 1.11 | 65.09 | 7.21 | 98.8 |
| 2026-09-15 | 1.13 | 63.88 | 7.09 | 98.8 |
| 2026-09-14 | 1.14 | 62.04 | 6.9 | 98.8 |
| 2026-09-11 | 1.13 | 59.11 | 6.6 | 98.8 |
| 2026-09-10 | 1.12 | 58.6 | 6.54 | 98.8 |
| 2026-09-09 | 1.17 | 55.83 | 6.26 | 98.8 |
| 2026-09-08 | 1.19 | 52.45 | 5.91 | 98.8 |
| 2026-09-04 | 1.21 | 48.98 | 5.56 | 98.8 |
| 2026-09-03 | 1.22 | 48.59 | 5.52 | 98.8 |
| 2026-09-02 | 1.22 | 48.07 | 5.46 | 98.8 |
| 2026-09-01 | 1.2 | 47.48 | 5.4 | 98.8 |