President Donald Trump stated on Friday that U.S. Steel would retain its headquarters in Pittsburgh, describing the move as part of a "planned partnership" — a phrase that appeared to hint at his willingness to support a significant investment by Japan's Nippon Steel in the iconic American firm, if not a complete acquisition. However, Trump stopped short of clearly endorsing Nippon Steel's bid, despite his earlier promises to block any attempt to place U.S. Steel under foreign ownership. Recently, Trump appeared to soften his stance, suggesting Nippon Steel might invest in, rather than acquire, U.S. Steel. A union official also indicated Friday that the federal government could oversee the company's future operations. Nevertheless, investors interpreted Trump's remarks as a green light for some form of merger, triggering a surge in U.S. Steel's stock. Both companies later released statements welcoming the news.