Portfolio risk · 3 short notes
Risk is more than one number
Volatility, drawdown, concentration, and exposure answer different questions. No single measure describes every way a portfolio can be uncertain.
Published · Updated
Field note 1 of 3
Volatility describes variation
Volatility summarizes how widely observations moved over a selected window. It does not show every loss path or explain which holdings and drivers are concentrated.
A dispersion summary is one lens, not a complete account of portfolio risk.
Field note 2 of 3
Drawdown adds a path
Drawdown follows a decline from a previous peak. Recovery time adds another dimension that a dispersion measure alone cannot show.
A peak-to-trough path can differ even when two summaries look similar.
Field note 3 of 3
Look through the holdings
Different tickers can still share equity, duration, currency, sector, or factor exposure. Review overlap and concentration beside the historical chart.
Illustrative grouping: shared drivers may cut across different holdings.
Source
Guide: Portfolio risk analysis. The source distinguishes volatility, drawdown, concentration, exposure, and recovery time.
Evidence boundary
Risk measures depend on the chosen window, frequency, benchmark, and data. They describe observed or modeled behaviour; they do not predict the next loss, measure personal risk capacity, or provide a recommendation.
Risk measures depend on the chosen window, frequency, benchmark, and data. They describe observed or modeled behaviour; they do not predict the next loss, measure personal risk capacity, or provide a recommendation.