US stocks were lower at the open on Tuesday, struggling to sustain a rally yet again, after oil prices resumed their declines.
The Dow Jones industrial average fell 47.46 points, or 0.29%, to 16,573.2, the S&P 500 lost 6.57 points, or 0.34%, to 1,938.93 and the Nasdaq Composite index dropped 21.08 points, or 0.46%, to 4,549.53.