The stock market cleared another big hurdle after consumer price inflation came in cooler than expected, but the major indexes struggled to hold onto gains at the open.

The S&P 500 was flat after opening higher on Wednesday. The Dow Jones Industrial Average was down 31 points, or 0.1. The Nasdaq Composite was up 0.2%.

The yield on the 2-year Treasury note sank to 3.96%. The 10-year yield dropped to 4.44%.