beta

# Beta — Beta Coefficient & Systematic Risk Reference Quick-reference skill for understanding and applying the beta coefficient in finance, portfolio management, and risk analysis. ## When to Use - Calculating a stock's beta relative to a benchmark index - Understanding systematic vs unsystematic risk - Applying CAPM to estimate expected returns - Constructing beta-neutral or target-beta portfolios - Interpreting regression output for asset sensitivity ## Commands ### `intro` ```bash scripts/script.sh intro ``` Overview of beta — definition, intuition, and role in modern finance. ### `capm` ```bash scripts/script.sh capm ``` Capital Asset Pricing Model — formula, assumptions, and expected return calculation. ### `calculate` ```bash scripts/script.sh calculate ``` How to calculate beta — regression method, covariance/variance method, and practical steps. ### `interpret` ```bash scripts/script.sh interpret ``` Interpreting beta values — what β>1, β=1, β<1, and β<0 mean in practice. ### `types` ```bash scripts/script.sh types ``` Types of beta — levered vs unlevered, adjusted beta, fundamental beta, bottom-up beta. ### `portfolio` ```bash scripts/script.sh portfolio ``` Portfolio beta — weighted average calculation, target beta, beta hedging strategies. ### `pitfalls` ```bash scripts/script.sh pitfalls ``` Common pitfalls — estimation window, benchmark choice, non-stationarity, and survivorship bias. ### `examples` ```bash scripts/script.sh examples ``` Worked examples with real-world beta scenarios and calculations. ### `help` ```bash scripts/script.sh help ``` ### `version` ```bash scripts/script.sh version ``` ## Configuration | Variable | Description | |----------|-------------| | `BETA_DIR` | Data directory (default: ~/.beta/) | --- *Powered by BytesAgain | bytesagain.com | hello@bytesagain.com*