Investors are placing bold bets on tech stocks — this is a very bad idea By: MarketWatch April 08, 2020 at 11:03 AM EDT When sentiment becomes extremely positive, it is time to sell. Read More >> Related Stocks: Adv Micro Devices Alibaba Group Holding Ltd Alphabet-A Alphabet-C Amazon.com Apple Dow Industrials SPDR Facebook Intel Corp Microsoft NVIDIA Corp Netflix Tesla, Inc.