Here's everything you must know before Tuesday's opening bell:
Shares of Alphabet rose premarket after it easily beat first-quarter earnings and revenue expectations.
Amazon has begun work on a domestic robot nicknamed 'Vesta.'
United Airlines CEO Oscar Munoz gave up his 2017 bonus.
Investors will analyze earnings from Coca-Cola , Verizon and more.
U.S. stock futures were higher despite rising bond yields.
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