Educational research ยท Evidence concept
Portfolio risk
A practical guide to volatility, drawdown, concentration, and exposure as different descriptions of portfolio uncertainty.
How to read it
Risk is not one number. Volatility describes dispersion, drawdown describes a peak-to-trough loss path, and concentration describes dependence on a small number of holdings or drivers.
Why it matters
Separating these lenses prevents a smooth historical return series from hiding a concentrated exposure or a long recovery requirement.
Evidence boundary
Risk measures depend on the window, frequency, benchmark, and data quality. They describe observed or modelled behaviour; they do not predict the next loss or define personal risk capacity.
These pages explain historical and diagnostic evidence. They are not forecasts, guarantees, or personal financial advice.