[MARKET ANALYSIS] USD firmer against most peers but DXY capped by continued JPY outperformance
- G10s are mostly weaker against the Buck bar EUR (U/C) and JPY (+0.4%). NOK (-0.9%) underperforms amid sharply lower oil prices.
- USD is firmer against most G10 peers except the Yen, whose gains are sufficient to keep DXY unchanged. A lot of moving parts, including geopolitics and Treasury action in FX markets. Geopolitics remain bearish for the USD, with Brent Oct'26 down ~7% after the US cancelled planned strikes on Iran and anticipates negotiations to resume today. Aside from this (and geopolitics) is incoming negotiations commentary and some US data, including the July ISM manufacturing release. DXY found buyers below 99.50 and the 100 DMA at 99.70. The next region to watch is around 100, which has proven sticky throughout the last few sessions.
- No real move seen to the final EZ manufacturing PMI read, where revised metrics were broadly unchanged despite the revision period coinciding with energy upside related to the breakdown of the US-Iran MoU. Within the EZ-wide release, commentary downplayed the strong figure, noting "factories continue to reduce headcounts.... the manufacturing economy is not quite as healthy as the headline numbers might suggest." EUR/USD gradually weakened throughout the morning to a 1.1520 base; the 50 DMA is likely to be support at 1.1480. EUR/JPY gradually moved higher amid profit-taking around 180. Elsewhere, FT reported that the US Treasury intervened in the market by buying JPY for EUR.
- Several factors continue to buoy JPY after roughly 5% gains against the Buck over the past three sessions. Remarks from top FX diplomat Mimura coincided with USD/JPY downside overnight. He noted "they will not hesitate to conduct further joint intervention" and "will respond to FX in coordination with monetary policy", implying the BoJ should continue policy normalisation in reflection of the currency; remarks which pushed the pair to a 155.26 base, a level not seen since may where the low was 155.03; it is essentially no-man's-land below with the next support at the 152-53 region. JPMorgan sees little chance coordinated intervention would drive a sustained rally that pushes the pair below 150. ING said it struggles to see the action driving USD/JPY sustainably below 155, while Oxford Economics said intervention will likely have a longer-lasting effect compared with past unilateral interventions, but it still will not be enough to reverse the trend of yen weakness.
Episodes built around intervention rhetoric and actual intervention in the yen have a well-worn template: verbal escalation from the currency diplomat first, then unilateral MOF action, with coordinated or foreign-assisted action sitting at the rarest and most consequential end of the spectrum. The reported Treasury participation in buying yen for euros, if sustained, belongs to that rarest category, and historically foreign participation has mattered more for signalling than for flow size, since it removes the usual constraint that unilateral action fights the rate differential alone. The pattern in past intervention cycles is a sharp initial move, a test of the cleared levels, then gradual reassertion of the underlying trend unless the policy backdrop shifts, which is why the dealer commentary cited here clusters around the view that sub-150 sustainability requires BoJ normalisation to do the heavy lifting rather than intervention itself. Mimura's explicit linkage of FX policy to monetary policy is the more durable signal: it frames the yen as an input into the BoJ's rate path, which raises the sensitivity of the next BoJ meeting and any commentary from the Governor. The case distinction worth drawing is between a level defence (intervention holding a zone, which has tended to work only while speculative positioning is stretched) and a trend reversal, which historically has coincided with narrowing rate differentials rather than with intervention per se. The DXY picture is the standard side-effect: yen strength caps the index even while the dollar firms broadly, so the index understates the dollar's performance against the rest of G10. Follow-ons are confirmation or denial of further coordinated action, positioning data for evidence of yen short capitulation, and whether oil's slide on the Iran de-escalation holds, since crude has been the swing factor for the terms-of-trade currencies at the other end of the board.