AMD Move Probability $512.78 +8.53 (+1.7%)
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)
72.4%
Stock touched -3.5% ($494.83) at least once during 10 trading days.
Median first touch: Day 2 of 10
Expiration Close Probability
30.7%
Stock closed at or beyond -3.5% at the end of the 10-day window.
The Touch Multiple
2.36x
You are 2.4x more likely to hit your target during the window than holding until expiration.
1σ Expected Move (68.3%)
±12.3%
$449.93 — $575.63
Historical 10-Day Return Distribution
Frequency of rolling 10-day percentage returns over 511 historical windows (2024-08-19 to 2026-09-16). The colored bar indicates the win zone for -3.5%.
Historical returns
Target move zone (-3.5%+)
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) | 72.4% | 30.7% | Model-free reality across 511 historical 10-day windows. |
| Fat-Tail Adjusted (Cornish-Fisher) | — | 35.7% | Adjusts normal bell curve for real-world skewness (0.55) and kurtosis (4.83). |
| Standard Normal (Black-Scholes / GBM) | 77.1% | 38.6% | Classic theoretical log-normal model with constant volatility (often underestimates tail risks). |
| Regime-Conditioned (Similar Volatility) | 70.0% | 32.4% | Filters for historical windows that started with volatility similar to current 20-day HV (333 matching periods). |
Underlying Volatility Profile
Volatility Metrics
- 1-Year Annualized HV: 61.5%
- Recent 20-Day HV: 47.5%
- Parkinson Intraday Volatility: 43.3%
- Vol Trend: Compressed (-23% vs baseline)
10-Day Return Quantiles
- Median Return: +1.1%
- Top 10% Move (90th percentile): +18.6%
- Bottom 10% Move (10th percentile): -9.9%
- Max Historical Gain (10d): +46.4%
- Max Historical Loss (10d): -31.9%