OPRX Move Probability $9.44 +0.50 (+5.6%)
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)
76.2%
Stock touched +5.0% ($9.91) at least once during 14 trading days.
Median first touch: Day 3 of 14
Expiration Close Probability
39.6%
Stock closed at or beyond +5.0% at the end of the 14-day window.
The Touch Multiple
1.93x
You are 1.9x more likely to hit your target during the window than holding until expiration.
1σ Expected Move (68.3%)
±19.3%
$7.62 — $11.26
Historical 14-Day Return Distribution
Frequency of rolling 14-day percentage returns over 508 historical windows (2024-09-23 to 2026-10-21). 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) | 76.2% | 39.6% | Model-free reality across 508 historical 14-day windows. |
| Fat-Tail Adjusted (Cornish-Fisher) | — | 23.0% | Adjusts normal bell curve for real-world skewness (1.32) and kurtosis (11.01). |
| Standard Normal (Black-Scholes / GBM) | 80.0% | 40.0% | Classic theoretical log-normal model with constant volatility (often underestimates tail risks). |
| Regime-Conditioned (Similar Volatility) | 77.6% | 46.2% | Filters for historical windows that started with volatility similar to current 20-day HV (223 matching periods). |
Underlying Volatility Profile
Volatility Metrics
- 1-Year Annualized HV: 81.9%
- Recent 20-Day HV: 50.1%
- Parkinson Intraday Volatility: 62.2%
- Vol Trend: Compressed (-39% vs baseline)
14-Day Return Quantiles
- Median Return: +0.8%
- Top 10% Move (90th percentile): +28.2%
- Bottom 10% Move (10th percentile): -19.4%
- Max Historical Gain (14d): +108.9%
- Max Historical Loss (14d): -36.4%