Cashing in on cash is a costly investment mistake. Just ask the millennials

Only 18% of all American adults are earning more than 1.5% on their savings

Millennials think cash is the best long-term investment. Unsurprisingly, they’re not seeing good returns.
 

Almost 1 in 3 millennials said cash instruments, such as savings accounts and certificates of deposit, are the best place to invest money they won’t need for the next 10 years. That compares with only 21 per cent of older generations—most of whom prefer the stock market—according to research released on Wednesday.
 

The study was conducted for Bankerate.com by market-research firm GfK SE, which gathered data this month from 1,000 Americans age 18 and older. Millennials were defined as those between the ages of 18 and