The CNN Money Fear and Greed index showed a slight decline in the overall market sentiment, but the index remained in the “Greed” zone on Monday. U.S. stocks closed lower on Monday, with the Dow Jones index falling more than 150 points during the session. U.S. markets are on course to record gains for the fifth straight month, with the major indices hitting fresh record closing highs last week. The S&P 500 added around 2.3% last week. Shares of United Airlines Holdings, Inc. (NASDAQ: UAL) fell 3.4% on Monday after the FAA reportedly weighed curbing new routes for the airline amid recent safety…