Nippon Steel (OTCPK:NISTF) (OTCPK:NPSCY) and US Steel (NYSE:X) said Wednesday they have finalized their partnership, completing the 18-month effort to combine the American and Japanese steelmakers. The companies reached a conditional deal with the Trump administration on Friday after Nippon (OTCPK:NISTF) (OTCPK:NPSCY) agreed to spend an additional

Nippon Steel's $14.9 billion acquisition of U.S. Steel closed on Wednesday, the companies said, confirming an unusual degree of power for the Trump administration after the Japanese company's 18-month struggle to close the purchase.

Nippon Steel Corp. closed its $14.1 billion takeover of United States Steel Corp., bringing to an end an 18-month effort to combine the American and Japanese steelmakers, the companies said in a Wednesday statement.