The page shows the relationship between 15-year annualized returns and volatility for a selection of asset classes, along with several illustrative portfolios. These sample portfolios each exist on different points of the risk spectrum. Investors should always focus on building a portfolio based on their risk tolerance levels (e.g. conservative, balanced, aggressive) and investment objectives, instead of investing in a single asset class, in order to reach a better balance between risk and return. While we can see that cash is relatively low risk, it historically has provided little or no return. Cash also does not provide good protection against inflation. Investors with heavy allocations in cash can consider deploying some of it into other asset classes.