 There were bright spots. Some companies that have grown with the economy were rising. Others, including NVIDIA, are still up nearly 140% this year, even after a big drop Friday. The biggest wild card, how will President Biden dropping out of the race affect investors? And how will they react to his endorsing Vice President Harris? Analysts say American Express's stock drop was a big part of the Dow's dip. Investors watching for earnings reports this week from several big tech firms, including Tesla, Google parent Alphabet,