A rare, coordinated foreign exchange intervention by US and Japanese authorities on Friday was confirmed by Japan's Finance Minister Satsuki Katayama, aiming to halt the Japanese Yen's (JPY) decline. US Treasury Secretary Scott Bessent stated that Washington would not hesitate to participate in further coordinated action if disorderly moves in the JPY persist, prompting aggressive follow-through JPY short-covering and exerting pressure on the AUD/JPY cross [1][2]. As a result, the AUD/JPY pair dropped to its lowest level since early April, trading around the 110.00 mark, down over 0.50% for the day, and extending last week's sharp retracement slide from the highest level since early June [1].
The Bank of Japan (BoJ) maintained a hawkish bias at its July meeting, with Governor Ueda's remarks marking a clear shift in tone. TD Securities noted that Ueda “sounded the most hawkish that he's been in a long while,” suggesting the BoJ could move again as soon as September with a potential 25bps hike [1]. Meanwhile, the Australian Dollar (AUD) struggled amid diminishing odds for an immediate rate hike by the Reserve Bank of Australia (RBA), as recent core inflation edged up from +3.5% to +3.6%, below the consensus estimate of +3.7%. Deutsche Bank strategists highlighted that this softer-than-expected inflation print, alongside weaker headline inflation, reduces the urgency for additional RBA hikes after three increases this year [1].
Aggressive JPY short-covering also undermined the US Dollar (USD), contributing to the EUR/USD pair's rally to its highest level since June 17, climbing beyond the mid-1.1500s during the Asian session [2]. The USD Index (DXY) continued its retracement slide, with Brown Brothers Harriman’s Elias Haddad stating that “the USD rally from May has run its course, with DXY poised to retreat back into a 96.00-100.00 range.” Policy concerns, particularly Fed Chair Kevin Warsh's failure to turn tough inflation rhetoric into credible policy, are increasing the risk that the Fed falls behind the curve in containing inflation [2].
The Euro drew support from resilient Eurozone inflation data and a solid 2Q26 GDP print, strengthening the case for further ECB tightening. Societe Generale’s Sam Cartwright argued that “today’s release should support another ECB rate hike in September,” as resilient growth and slightly firmer price pressures give the central bank room to maintain a hawkish stance [2].
Market tables show the Japanese Yen was the strongest against the US Dollar over the past seven days, while the US Dollar was strongest against the British Pound today. The AUD/JPY cross remains vulnerable, and the EUR/USD pair is poised for further appreciation as traders await key US macro releases for fresh impetus [1][2].
CONCLUSION
The joint US-Japan intervention has significantly strengthened the Yen, pressured the AUD and USD, and shifted market expectations toward further BoJ and ECB tightening. Softer Australian inflation and policy concerns in the US have diminished the case for near-term rate hikes by the RBA and the Fed, while the Euro continues to benefit from resilient economic data. Overall, the intervention and shifting rate outlooks have had a high market impact, driving notable currency moves.