Rivian Automotive, Inc. (NASDAQ:RIVN) shares slipped Friday as investors weighed mixed signals following the company’s third-quarter update.RIVN is among today’s weakest performers. Check the full analysis hereMomentum has cooled despite strong growth, with Wall Street parsing comments about future scale and cash needs.On November 4, the EV company announced third-quarter total revenue of $1.56 billion, representing an 78$1.50 billion.Al ...