Journal of Investment Strategies

A proof of the optimality of volatility weighting over time

Winfried G. Hallerbach


We provide a proof that volatility weighting over time increases the Sharpe ratio or the information ratio. The higher the degree of volatility smoothing achieved by volatility weighting, the higher the risk-adjusted performance. Our results apply to risky portfolios managed against a risk-free or risky benchmark (therefore including alpha strategies) and to volatility-targeting strategies. We provide an empirical illustration of our results.

Sorry, our subscription options are not loading right now

Please try again later. Get in touch with our customer services team if this issue persists.

New to View our subscription options

You need to sign in to use this feature. If you don’t have a account, please register for a trial.

Sign in
You are currently on corporate access.

To use this feature you will need an individual account. If you have one already please sign in.

Sign in.

Alternatively you can request an individual account here