Wall St on 4-day losing streak

Wall St closed down for fourth straight session as investors remained cautious amid uncertainties surrounding central bank's stimulus program and U.S. budget issues.
Dow Jones Industrial Average fell 66.79 points to end at 15,334.59.
S&P 500 slid 4.42 points to 1,697.42, while the Nasdaq managed to add 2.97 points at 3,768.25.
Among key S&P sectors, telecom and consumer staples stocks led the laggards, while industrial shares end slightly up.