SINGAPORE/LONDON—The dollar index was steady on Friday, a rare spot of calm in volatile global markets ahead of key U.S. payrolls data later in the day, while the yen weakened after the Bank of Japan kept stimulus settings steady.
The dollar jumped as much as 0.63 percent against the yen, a knee-jerk move after the BOJ kept policy unchanged in Governor Haruhiko Kuroda’s last policy meeting before he steps down in April.