SMCI Move Probability $36.85 +1.21 (+3.4%)
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)
28.5%
Stock touched +5.0% ($38.70) at least once during 1 trading days.
Median first touch: Day 1 of 1
Expiration Close Probability
15.8%
Stock closed at or beyond +5.0% at the end of the 1-day window.
The Touch Multiple
1.80x
You are 1.8x more likely to hit your target during the window than holding until expiration.
1σ Expected Move (68.3%)
±12.0%
$32.42 — $41.29
Historical 1-Day Return Distribution
Frequency of rolling 1-day percentage returns over 520 historical windows (2024-08-19 to 2026-09-16). 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) | 28.5% | 15.8% | Model-free reality across 520 historical 1-day windows. |
| Fat-Tail Adjusted (Cornish-Fisher) | — | 0.0% | Adjusts normal bell curve for real-world skewness (12.39) and kurtosis (220.3). |
| Standard Normal (Black-Scholes / GBM) | 68.5% | 34.3% | Classic theoretical log-normal model with constant volatility (often underestimates tail risks). |
| Regime-Conditioned (Similar Volatility) | 23.6% | 11.6% | Filters for historical windows that started with volatility similar to current 20-day HV (267 matching periods). |
Underlying Volatility Profile
Volatility Metrics
- 1-Year Annualized HV: 191.1%
- Recent 20-Day HV: 68.6%
- Parkinson Intraday Volatility: 69.5%
- Vol Trend: Compressed (-64% vs baseline)
1-Day Return Quantiles
- Median Return: +0.0%
- Top 10% Move (90th percentile): +7.6%
- Bottom 10% Move (10th percentile): -5.9%
- Max Historical Gain (1d): +817.9%
- Max Historical Loss (1d): -32.9%