The Japanese yen surged against the US dollar on July 30, 2024, in what traders and analysts widely speculated was a result of official intervention by Japanese authorities.
The move was the yen's biggest single-session jump since Japanese officials intervened in the market earlier this year. Reports of the yen's percentage gain against the dollar vary, with some sources citing a 2% increase and others reporting around 3%. The dollar fell as much as 3% against the yen, although reports of the gain differ.
The dollar fell to 158.34 yen at its low on July 30, according to some reports, while other sources reported a low of 157.8 yen. The sharp move came ahead of the Bank of Japan's policy meeting scheduled for July 31.
Japanese authorities had previously intervened in April and May 2024, spending more than $70 billion (or ¥11.73 trillion) to support the yen. Japanese Finance Minister Satsuki Katayama said the government was ready to take appropriate action against excessive currency moves.
Analysts offered varying views on potential intervention thresholds. Nomura argued Japanese officials would tolerate a move toward 164 or 165 yen per dollar before intervening again. State Street's Masahiko Loo said warnings had been front-run so often they lost their shock value, pushing Japan toward strategic silence. Alexandre Drabowicz at Indosuez Wealth Management flagged a 164-165 threshold but cautioned that unilateral intervention rarely works without US-Japan coordination.
The Federal Reserve had left interest rates unchanged at its July 30 meeting, contributing to dollar weakness. Japan's low interest rates and higher energy import prices have kept the yen under pressure, with analysts noting that the widening interest rate differential is a fundamental factor. On July 30, the yen also experienced movements against the euro and pound, with conflicting reports stating it either strengthened or weakened against those currencies.