Yen Jumps 5% on U.S. Intervention as Analysts Doubt Rally
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- Coordinated U.S.-Japan intervention strengthened the yen roughly 5% in recent sessions before paring gains on Monday, lifting the currency to 157 per dollar from above 163 — its lowest level in four decades.
- UBS strategists Teck Leng Tan and Dominic Schnider wrote that Japan's policy mix is unlikely to generate sustained yen strength, given the BoJ's gradual normalization and persistently negative real rates.
- Reports indicate the U.S. Treasury may have sold euros — rather than dollars — to buy yen, a departure from the traditional dollar-asset approach that surprised markets and signaled reluctance to liquidate Treasuries.
- ING's Chris Turner attributed the dollar's resilience on Monday to unresolved uncertainty over whether the Federal Reserve will hike rates in September, with higher yields boosting demand for U.S. assets.
- HSBC analysts said a sustained USD-JPY downtrend requires faster BoJ rate hikes, a clearer Japanese government stance against yen weakness, and a pullback in fiscal expansion ambitions.
- Robin Brooks of the Peterson Institute argued the euro-selling twist could undercut U.S. participation efficacy, because markets will inevitably question why Washington didn't simply fund yen purchases from dollar reserves.
Why it matters: The intervention delivered a tactical 5% yen bounce, but four major analytical voices see no structural support for a sustained rally — Japan's negative real rates, fiscal stance, and gradual BoJ normalization haven't changed. The Fed's September rate path remains the dollar's real anchor, meaning currency intervention alone can't reverse a four-decade trend.
