By Atsuko Aoyama and Noriyuki Hirata

Monitors display the current Japanese Yen exchange rate against the U.S. dollar at a dealing room of the foreign exchange trading company Gaitame.com in Tokyo, Japan, July 31, 2026. REUTERS/Manami Yamada

(Reuters) - Japan may have sold as much as $58.97 billion in its latest efforts to bolster its ​currency, central bank data indicated on Friday, signalling repeated efforts to ‌stem the yen's weakness.

The Bank of Japan's projection for money market conditions for the following day suggests an 8.2 trillion yen net outflow of funds, compared with brokerage forecasts that range between a ​surplus of 1.4 trillion yen and a shortfall of 1.73 trillion yen.

Yen-buying ​activity involves the BOJ soaking up the currency from markets, so ⁠any outsized shortfalls in funds can offer an estimate of the size of ​any intervention.

Japan conducted a yen-buying, dollar-selling intervention in New York on Thursday, according to a ​market source, its first such foray in three months, as the currency's slump to four-decade lows threatened to worsen living costs hit by the Iran war-driven energy shock.

The move came ahead ​of the conclusion of the Bank of Japan's policy meeting on Friday. The ​central bank later in the day kept interest rates steady but signalled it would continue tightening.

The ‌BOJ ⁠raised its policy rate to a 31-year high of 1% in June. Market players expect rate hikes at a faster pace, as the slow pace of rate hikes has been blamed for pushing the yen to a 40-year low.

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The dollar sank ​to a more than ​two-month low against ⁠the Japanese yen on Thursday after what analysts said looked like official intervention.

After hitting 157.80 against the dollar on Thursday, ​the yen resumed its decline in Asian trade on Friday.

In ​European trade ⁠on Friday, the yen jumped briefly against the dollar again, with traders alert to the prospect of another intervention.

Japan spent a record 11.7 trillion yen intervening in foreign exchange ⁠markets between ​late April and early May. But the currency ​resumed its downtrend and slid to a low of 163.99 against the dollar last week.