Wall Street opens lower, led down by energy shares

U.S. stock indices fell on Friday ahead of the weekend, led lower by oil shares after crude prices hit three-week lows. 

On the other hand, the dollar rose against a basket of currencies today after drawing support from upbeat U.S. housing data, and after U.S. treasury secretary announced yesterday that tax reforms are near. 

As for crude prices, they sharpened their decline to a three-week low amid expectations of higher U.S. production, which offsets the positive impact of OPEC's output cuts. 

Standard and Poor's 500 fell 0.19%, or 4.51 points to 2,351.33, while Dow Jones gave up 0.13%, or 26.47 points to 20,552.24. 

Tech-heavy NASDAQ dipped 0.22%, or 12.85 points to 5,903.92.