Amazon leads Nasdaq to record; S&P off on banks, retail

NEW YORK (Reuters) - The S&P 500 closed slightly lower on Thursday weighed by financial shares and as investors dumped traditional retailers, but the Nasdaq Composite set a record closing high led by the strength of online retailer Amazon . The Dow Jones Industrial Average fell 42.87 points, or 0.21 percent, to 19,899.29, the S&P 500 lost 1.75 points, or 0.08 percent, to 2,269 and the Nasdaq Composite added 10.93 points, or 0.2 percent, to 5,487.94. (Reporting by Rodrigo Campos; Editing