volatility-modeling
Volatility Modeling
Volatility — the magnitude of price fluctuations — is arguably the single most important quantity in trading. It drives position sizing, stop placement, option pricing, and regime detection. This skill covers estimation, forecasting, and practical application of volatility in crypto markets.
Why Volatility Matters
| Use Case | How Volatility Is Used |
|---|---|
| Position sizing | Scale position inversely with vol so each trade risks a consistent dollar amount |
| Stop placement | ATR-based stops widen in high-vol regimes, tighten in low-vol |
| Strategy selection | Mean-reversion works in low vol; momentum works in high vol |
| Risk budgeting | Vol-target portfolios maintain constant portfolio-level risk |
| Regime detection | Vol regime shifts signal changing market dynamics |
| Option pricing | Implied vs realized vol gap creates trading opportunities |
Types of Volatility
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