Microsoft And Alphabet On Track For Record Closes As Big Tech Hold Gains

Shares of Microsoft Corp. and Alphabet Inc. were on track to set record closes Tuesday, finding a tailwind as traders returned from the holiday weekend. Just last week, Howard Silverblatt at S&P Dow Jones Indices said about 34% of the S&P 500's 2017 gains have come from Apple Inc. , Amazon.com Inc. , Facebook Inc. , Microsoft Corp. and Google's parent. Other stocks touching highs Tuesday include Nvidia Corp. , electric car maker Tesla Inc. and Intuitive Surgical . The latter was a surprise move, coming after Canaccord downgraded the stock earlier, saying its valuation was more stretched than at any other time in its 20-year history. The Dow Jones Industrial Average was down 0.2% and the S&P 500 was flat.