The Bank of Japan conducted a "rate check" on Friday, according to NHKニュース, a move that may be intended to push back against the yen's recent weakness. A rate check typically involves the central bank asking market participants about current exchange-rate levels, and it is often seen as a signal that authorities are preparing to act.
The yen strengthened sharply following the check, briefly trading in the upper 156 range against the dollar, 日本経済新聞 reported. The currency had earlier slid to the 158 level per dollar after remarks by Bank of Japan Governor Kazuo Ueda, NHKニュース reported.
Ueda's comments came after a rate increase, but they fell short of what markets had expected, 読売新聞 reported, triggering a wave of yen selling. In New York trading, the dollar rose against the yen, and Reuters noted that divided views within the Bank of Japan over further rate hikes have clouded expectations for additional tightening.

The sequence of events — a rate hike, a weaker yen, and then a rate check — highlights the tension between the central bank's gradual policy normalization and persistent downward pressure on the Japanese currency. A rate check does not by itself confirm that intervention has taken place, and Japanese authorities have not announced any actual market action.
What to watch next: whether the Bank of Japan or the Ministry of Finance follows the rate check with an actual yen-buying intervention, and whether Ueda clarifies his stance on the pace of future rate increases.
