United States Steel (X) shares soared 5.1% in the last trading session to close at $54.85. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 29.3% gain over the past four weeks.U.S. Steel’s shares rallied after President Trump approved its partnership with Nippon Steel. Along with this approval, the companies have also completed the U.S. Department of Justice review process. The companies also signed a National Security Agreement ( ...