Fearing a bubble can lead to 5 costly mistakes By: CNBC.com News November 10, 2014 at 09:00 AM EST Investors sell at the worst time and wait too long to get back into stocks. The 'market top' and 'going to cash' calls aren't a strategy. Read More >> Related Stocks: Exxon Mobil International Business Machines New York Times Company Sentinelone Inc Cl A