PULM Move Probability $1.36 +0.00 (+0.4%)
Real historical back-data analysis: evaluates rolling trading-day windows to determine the probability of a stock touching or closing at your target move.
Touch Probability (First Passage)
58.6%
Stock touched +5.0% ($1.43) at least once during 14 trading days.
Median first touch: Day 4 of 14
Expiration Close Probability
32.1%
Stock closed at or beyond +5.0% at the end of the 14-day window.
The Touch Multiple
1.82x
You are 1.8x more likely to hit your target during the window than holding until expiration.
1σ Expected Move (68.3%)
±24.2%
$1.03 — $1.70
Historical 14-Day Return Distribution
Frequency of rolling 14-day percentage returns over 507 historical windows (2024-09-23 to 2026-10-20). The colored bar indicates the win zone for +5.0%.
Historical returns
Target move zone (+5.0%+)
Target threshold bin
Probability Breakdown: Empirical vs. Theoretical Models
Comparing actual market back-data against Black-Scholes and Fat-Tail adjustments.
| Model / Methodology | Touch Probability | Expiration Close Probability | What It Tells You |
|---|---|---|---|
| Empirical Back-Data (Actual History) | 58.6% | 32.1% | Model-free reality across 507 historical 14-day windows. |
| Fat-Tail Adjusted (Cornish-Fisher) | — | 22.4% | Adjusts normal bell curve for real-world skewness (-0.29) and kurtosis (24.39). |
| Standard Normal (Black-Scholes / GBM) | 84.0% | 42.0% | Classic theoretical log-normal model with constant volatility (often underestimates tail risks). |
| Regime-Conditioned (Similar Volatility) | 53.3% | 31.6% | Filters for historical windows that started with volatility similar to current 20-day HV (244 matching periods). |
Underlying Volatility Profile
Volatility Metrics
- 1-Year Annualized HV: 102.7%
- Recent 20-Day HV: 51.4%
- Parkinson Intraday Volatility: 53.6%
- Vol Trend: Compressed (-50% vs baseline)
14-Day Return Quantiles
- Median Return: -1.8%
- Top 10% Move (90th percentile): +20.9%
- Bottom 10% Move (10th percentile): -20.8%
- Max Historical Gain (14d): +245.4%
- Max Historical Loss (14d): -51.7%