These S&P 500 stocks have had the biggest increases in ‘buy’ ratings so far this year By: MarketWatch February 03, 2021 at 10:49 AM EST Over long periods, analysts' upgrades help drive stock prices higher. Read More >> Related Stocks: Amazon.com American Airlines Gp Assurant Chevron Corp Cigna Corp ConocoPhillips Intel Corp Jacobs Engineering Group Inc Lumen Technologies, Inc. SPX Teledyne Technologies Inc