In fact, investors have withdrawn a net total of $328 billion from the stock market since 2007, according to Strategic Insight.
Ever since, a big portion that cash has been looking for a home.
It seems simple enough, but investors are finding the answer to be more complicated than they imagined...
Thanks to our friends at the Federal Reserve, interest rates are at record lows. In fact, they're so low that most investors are getting practically nothing in returns.
Meanwhile, the stock market has put on a New Year's rally, rewarding those who were willing to jump in while leaving cautious investors wondering if they're holding too much boring old cash.
However, in order to have an adequate safety net, your cash on hand should be enough to cover about a year's worth of expenses, according to Shah Gilani, a retired hedge fund manager and Editor of the acclaimed Wall Street Insights & Indictments newsletter.
"That's a good safety net," Shah says.
But no matter how much cash you hold, you still have to balance your need for higher returns against your risk tolerance.
Because whether you're thinking "safety first" or are tempted to reach for a little more yield, the choice you make might determine whether you're able to sleep at night.