Japan's yen weakened past 163 per dollar on 21 Jul, its weakest since December 1986, as officials repeated warnings about currency moves without acting on them.
Yen Breaks 163 as Carry Funding Holds, Tokyo Holds Off
22 July 2026 - 12:00 CEST
By Oihyun Kim
Finance Minister Satsuki Katayama said on 22 Jul that Tokyo's stance was unchanged and that authorities "will take decisive action appropriately at any time" if needed, while declining to comment on specific levels. Chief Cabinet Secretary Minoru Kihara also used similar language.
The currency was little changed afterwards, at 163.11 per dollar, within a Tokyo session range on 22 Jul of 163.03 to 163.23. It had touched 163.24 overnight in New York.
Repeated warnings lose traction
"The market is ignoring it because they keep repeating the same message," said Marito Ueda, president of Tokyo currency broker SBI FX Trade, in comments to Bloomberg. He said the cost of acting makes execution difficult.
As reported last month, Japan spent ¥11.7tn ($73.6bn) supporting the yen between 28 Apr and 27 May, and the currency is weaker now than when that campaign started. A cabinet plan approved on 21 Jul included a footnote leaving monetary policy decisions to the Bank of Japan (BoJ), considered a signal that political pressure would not be used to delay further rate rises. The yen kept falling.
Crude prices reshape positioning
WTI front-month futures traded at $87.19 a barrel at 08:50UTC on 22 Jul, up 3.4% on the day, as fighting between the US and Iran entered its third week and traffic through the Strait of Hormuz remained at a standstill.
Iran struck a tanker in the waterway on 21 Jul, and Houthi forces declared a maritime embargo against Saudi Arabia. Japan depends on the Gulf for most of its crude, and its trade deficit widened in June as costlier oil and a weak currency inflated the value of imports.
Bitcoin (BTC) traded near $66,000 on 22 Jul, with no sign of the forced selling seen in August 2024, when a carry unwind, a rapid closing of trades funded by borrowing cheap yen to buy higher-yielding assets elsewhere, pulled every risk asset down together. Crypto assets fell as much as 20% in that episode, the Bank for International Settlements (BIS) found in Bulletin No 90, published that month. The scale of the drop suggested retail traders were meeting margin calls by selling holdings unrelated to the yen, the BIS said.
The funding leg has repriced since then. As reported at the time, the BoJ raised its policy rate to 1% on 16 Jun, the highest since 1995, though the gap with US rates remains wide enough to keep the trade in place.
If Japan does intervene, traders would treat the move as a chance to rebuild yen short positions rather than close them, wrote Mark Cranfield, a markets strategist at Bloomberg, in the firm's Markets Live commentary.
Intervention case remains unmade
Options prices show traders are not braced for a violent move. The ministry normally justifies intervention by pointing to disorderly moves, and that argument is difficult to make while the market stays this calm.
Rinto Maruyama, senior foreign exchange and rates strategist at SMBC Nikko Securities, told NQN, the Nikkei newswire, that intervention is unlikely and that 165 is the next level in focus. He said a purchase of yen would not hold while oil prices are rising.
165 is the next line traders are watching, but the pressure pushing the yen there isn't coming from Tokyo's currency desk. It's coming from the Gulf, and no verbal warning fixes the oil price.
