The Dow and the tech-heavy Nasdaq were down in morning trading while Europe barely moved either side of the positive-negative line after Asia drifted down slightly.
Yields on longer-dated U.S. Treasuries fell for a fourth straight day, with the benchmark 10-year yield hitting a fresh two-week low of 1.564pc and helping to ease inflation worries.
The Dow Jones Industrial Average (.DJI) rose 46.0 points, or 0.13%, at the open to 34253.87. The S&P 500 (.SPX) rose 14.3 points, or 0.34%, at the open to 4170.16, while the Nasdaq Composite (.IXIC) rose 86.2 points, or 0.64%, to 13557.212 at the opening bell.
The Dow Jones Industrial Average fell 11.4 points, or 0.03%, at the open to 33804.52. The S&P 500 rose 3.8 points, or 0.09%, at the open to 4138.78?, while the Nasdaq Composite rose 43.0 points, or 0.31%, to 13861.367 at the opening bell.