The dollar held gains against the yen on Friday, but ended the week lower after a six-week winning streak, as investors await Donald Trump's presidential inauguration and clarity on the course of the incoming administration's policies.

Speculative currency traders bolstered wagers for an even stronger US dollar in the leadup to President-elect Donald Trump’s return to the White House.

The U.S. dollar weakened against the yen on Thursday, as softer-than-expected U.S. economic data and growing confidence for a Bank of Japan interest-rate hike sent it tumbling to a near one-month low against the Japanese currency.