T Move Probability $21.91 -1.55 (-6.6%)
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)
2.5%
Stock touched +5.0% ($23.01) at least once during 2 trading days.
Median first touch: Day 2 of 2
Expiration Close Probability
1.3%
Stock closed at or beyond +5.0% at the end of the 2-day window.
The Touch Multiple
1.86x
You are 1.9x more likely to hit your target during the window than holding until expiration.
1σ Expected Move (68.3%)
±2.3%
$21.42 — $22.41
Historical 2-Day Return Distribution
Frequency of rolling 2-day percentage returns over 520 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) | 2.5% | 1.3% | Model-free reality across 520 historical 2-day windows. |
| Fat-Tail Adjusted (Cornish-Fisher) | — | 1.8% | Adjusts normal bell curve for real-world skewness (-0.88) and kurtosis (5.33). |
| Standard Normal (Black-Scholes / GBM) | 3.1% | 1.5% | Classic theoretical log-normal model with constant volatility (often underestimates tail risks). |
| Regime-Conditioned (Similar Volatility) | 4.8% | 1.2% | Filters for historical windows that started with volatility similar to current 20-day HV (84 matching periods). |
Underlying Volatility Profile
Volatility Metrics
- 1-Year Annualized HV: 25.4%
- Recent 20-Day HV: 47.4%
- Parkinson Intraday Volatility: 21.7%
- Vol Trend: Expanded (+87% vs baseline)
2-Day Return Quantiles
- Median Return: +0.2%
- Top 10% Move (90th percentile): +2.6%
- Bottom 10% Move (10th percentile): -2.3%
- Max Historical Gain (2d): +9.3%
- Max Historical Loss (2d): -8.9%