This is what it costs investors to stay in cash — and what to do instead

While money markets and certificates of deposit are still producing solid yields, sitting in too much cash could be costing investors money. Investors have piled into cash equivalent assets in recent years — and they have stayed despite the central bank's decision to cut the federal funds rate three times last year. The Fed's last decrease was in December and it's now on hold as it watches economic data and the impact of the Iran war. …