In a portfolio, you'll want a mix of asset classes, including cash (equivalents). As for how much cash, that'll depend on factors like age and risk tolerance.

Get realistic about retirement.

If you know where to put it, cash can still earn a solid, low-risk return of 3–5% with today’s top savings accounts, CDs, ...

Discover why one money expert says that holding too much cash in a bank account can shrink your wealth and learn smarter ways ...