# Tokyo Burns Through Its Yen Ammo as August Looms - Week of August 3, 2026 > A synthesis of what FX desk podcasts said for the week ending August 3, 2026, as three central banks held and the yen still ripped nearly 4 percent, with JPMorgan estimating Japan has only 5 to 6 trillion yen of intervention firepower left and the desks disagreeing over whether Washington joined the operation. ## G10 FX Weekly ### Week of August 3, 2026: Tokyo Burns Through Its Yen Ammo as August Looms --- A quiet week this was not. Three central banks met, all three stood pat, and yet the dollar still fell 1.6%, the yen ripped nearly 4% in two sessions, and Japan's Ministry of Finance quietly spent down what may be the last of its intervention firepower. If you only have five minutes before your desk fills up, this is the issue to read: the podcasts were almost wall-to-wall on the yen, and the disagreements between them are exactly where the money is. --- ## TL;DR - **The Bank of Japan held at 1%**, but Governor Ueda's press conference leaned hawkish. September is now a "live" meeting, with most desks pencilling in the next hike for **September or October**. - **Japan intervened to buy yen on July 30**, dragging dollar/yen from roughly **164 down to 158**. Size estimates range from **¥6-8.5 trillion**, and by JPMorgan's math, Tokyo may have only **¥5-6 trillion of dry powder left**. - **Did Washington help?** The stories don't agree. JPMorgan says it was just a New York Fed "rate check" and true coordination is very unlikely; the *Financial Times* (via NAB) says the US actually sold euros to buy yen, the first joint US-Japan intervention in nearly 30 years. - **Every desk agrees intervention alone won't hold.** Past bouts (2024, and again this April/May) fully reversed within about a month. Only a faster BoJ or a Fed pause changes the trend. - **The Swiss franc is quietly becoming the new funding currency.** A report that the SNB will sit at zero through 2027 has traders eyeing CHF as the next carry funder alongside, or instead of, the yen. - **August is on everyone's mind.** Danny Moses and Guy Adami walked through the August 2024 carry-unwind analog and warned this time Japan also has a bond-market problem. - **The out-of-consensus macro trade:** long euro, long bonds, short dollar. Alfonso Peccatiello is making the case; his co-host, a trader, isn't buying the timing yet. --- ## What's new **Japan drew its sword, and may be running low on blades.** The headline event was the Ministry of Finance stepping into the currency market on July 30 to buy yen, the day after dollar/yen pushed back above 160. On [At Any Rate](http://url7324.matterfact.com/ls/click?upn=u001.idHmPrr2Geh7KYLAsTy7NkrIVb-2FgA4pmf2rMXQwGcOh-2FE9XQg8lG0TcCIv6N-2BxbgezdB6Q2zVs9GbThTL27Qm6coIyjDAY-2BWFZ5fOFNcymo5nW-2FiP5ru2XeJ29Tub0o11AdgorzmOcToZj3Skf5azQ-3D-3DP7es_7mLGwmUci-2BLaXswv9WX1yTgqn3Wad-2FotHhzHgSNAZbVBJj1aMZkUIYrPmBjqxtAaeeqt21RcsdAArzNHb6e4z4-2Budx34T8MSMdfXFTo58Px6-2BMmCsOhom3vWZcMGKV0ISB-2FiGB0Bw2-2FJSSBoYehvs2ZY4Uy-2BziSbPm17rBKlTTm42vYQOeV96K0d3QHwN6tz3QyLcxU5oTA6DWeY0He-2BJQ-3D-3D), JPMorgan's yen strategist laid out the mechanics with unusual precision: this intervention was an estimated **¥6-7 trillion**, and stacked on top of the roughly **¥12 trillion** spent in April and May, Japan has now deployed **¥18-19 trillion this year, already more than the ¥15 trillion it used in all of 2024.** The punchline is the one PMs should tape to their monitor: > "The remaining dry powder is only about 5 to 6 trillion yen, making repeated large-scale intervention unlikely going forward." In plain terms: Tokyo can probably do this once or twice more, then it's out of ammo, because burning reserves too fast would itself signal weakness. (MUFG's read on the size was a touch higher, around **¥8.5 trillion**, still smaller than the April/May round, and notes the move came with **no advance warning**, which caught traders off guard.) **Was America in the trade? Depends who you ask.** This is the single most important open question of the week, and the podcasts genuinely disagree: - **JPMorgan ([At Any Rate](http://url7324.matterfact.com/ls/click?upn=u001.idHmPrr2Geh7KYLAsTy7NkrIVb-2FgA4pmf2rMXQwGcOh-2FE9XQg8lG0TcCIv6N-2BxbgezdB6Q2zVs9GbThTL27Qm6coIyjDAY-2BWFZ5fOFNcymo5nW-2FiP5ru2XeJ29Tub0o11AdgorzmOcToZj3Skf5azQ-3D-3DP7es_7mLGwmUci-2BLaXswv9WX1yTgqn3Wad-2FotHhzHgSNAZbVBJj1aMZkUIYrPmBjqxtAaeeqt21RcsdAArzNHb6e4z4-2Budx34T8MSMdfXFTo58Px6-2BMmCsOhom3vWZcMGKV0ISB-2FiGB0Bw2-2FJSSBoYehvs2ZY4Uy-2BziSbPm17rBKlTTm42vYQOeV96K0d3QHwN6tz3QyLcxU5oTA6DWeY0He-2BJQ-3D-3D))** says the only US fingerprint was a New York Fed "rate check," the second since January, and that real coordinated intervention is "highly unlikely," because the bar is a genuine crisis (think 1998 or the 2011 earthquake), and "Japan's current situation is difficult to characterize as a crisis." - **MUFG** adds that Treasury Secretary Scott Bessent publicly called the yen "highly undervalued" and said "excessive volatility is undesirable," and flags unconfirmed reports that **Korea may have intervened alongside Japan**, which, if true, would be a first. - **NAB**, citing the *Financial Times*, goes furthest: it says the **Bank of New York sold euros to buy yen on behalf of the US Treasury, routed through Goldman Sachs and Morgan Stanley, the first time Tokyo and Washington have jointly bought yen in nearly 30 years**, with Japan's finance minister expected to make the partnership official. So the same week produced "it was basically just a phone call" and "it was the biggest coordinated show of force in three decades." That gap matters: coordinated buying is far more powerful than Japan acting alone, and it changes how much you should fear being short yen here. **The BoJ held, but Ueda leaned in.** All the pro desks agree the Bank of Japan left its policy rate unchanged (Nomura's Yusuke Mieri confirms **1%**), and that the initial statement read neutral-to-dovish. The shift came in the press conference. As MUFG put it, Ueda flagged "greater upside risk" to inflation, singling out **AI-related demand and yen weakness** as the forces pushing prices up, and said the Bank is "preparing to hold careful discussions at the next policy meeting." Nomura's translation: **September is now a live meeting**, with October the base case for the next hike. JPMorgan was more cautious: Ueda's tone was hawkish but "did not convey a level of determination that would clearly signal an aggressive stance against yen weakness." **Sterling: a hawkish hold, and a governor telling everyone to calm down.** The one solid pound data point came from MUFG's Abdul Ahad Lockhart, who walked through the Bank of England's **6-3 vote to hold at 3.75%**. The wider-than-expected split reflected real worry about inflation, with Catherine Mann, Hugh Pill and Megan Greene the hawks (Mann swinging back hawkish on Middle East energy risk), and Swati Dhingra and Alan Taylor the doves. But Governor Bailey used the podium to lean against the hawkish read, in a line worth quoting: > "Please do not leave the room thinking that the Bank of England is edging close to a hike." **The Fed set the whole thing in motion.** The backdrop to every currency move was the FOMC. New Chair Kevin Warsh held rates, delivered a hawkish-sounding statement, then softened it in Q&A, "wishy-washy," as Saxo's John Hardy put it. Three regional Fed presidents dissented in favor of a hike. The market had almost fully priced a September hike going in; it left far less sure. Long-term US yields jumped (the 30-year hit **5.27%, its highest since 2007**, per NAB) and the dollar sagged, which is the current that carried the yen higher. --- ## The debate **Bull case, the dollar is tired, so fade it:** Alfonso Peccatiello of *The Macro Trading Floor* is making the cleanest version of the contrarian trade, **long euro, long bonds, short dollar** as the highest risk-adjusted bet for the next three to four months. His logic: the market is heavily long dollars (a lot of people bought dollars hedging for a Fed hike that never came), US tech capital inflows are cooling, US fiscal support fades after June, and AI capex growth is slowing. In that world, "defensive" currencies, **the euro, yen and franc**, all do well as the dollar drifts lower. He thinks Japan's giant pension fund (GPIF) slowly bringing money home is a real, if bureaucratic, tailwind for the yen over two to three months; it just hired three domestic bond managers, which he reads as the first turn of that flywheel. **Bear/skeptic case, right idea, wrong week:** His co-host, trader Brent Donnelly, isn't buying the timing. He can't find the near-term catalyst, the weak inflation data and dovish Fed have already happened, and he's living proof of the frustration: he's been **short Swiss/yen "for a couple of weeks and it's exactly where it was."** His sharper point is a warning against overthinking the yen story right now: > "If you have a yen idea, it's not doing anything. It's just a pure dollar situation until further notice." In other words, euro and yen are trading as the same dollar trade this week; the *idiosyncratic* yen move (the violent one) comes later, when the flows actually turn, "but we're not there yet." **Where the tape is one-sided:** on sustainability, there's no real debate, everyone agrees intervention alone fails. MUFG, JPMorgan and NAB all made the same historical point: the yen strength after the 2024 and the April/May 2026 interventions fully reversed within about a month as short positions rebuilt. NAB's FX team (Ray Attrill and Rodrigo Catril) put it plainly, intervention "may limit how much the yen can weaken, but it's not the start of a trend strengthening." The only things that change the trend are a genuinely faster BoJ or a Fed that stops threatening to hike. --- ## Trades in play A few concrete expressions surfaced from the podcasts: - **The out-of-consensus macro basket (Peccatiello, [The Macro Trading Floor](http://url7324.matterfact.com/ls/click?upn=u001.idHmPrr2Geh7KYLAsTy7NkrIVb-2FgA4pmf2rMXQwGcOgDErJYSxyO5DWJW2Qn2ECdKz2z-2Br0fd7-2FIJ7elhe1L9yoEL7fA-2BaI3QVGM8nnkeeL3C2Wt73gCxz24NBwpuqrm-2BmQpLxrCq74B-2BFllfOrlmQ-3D-3DpATG_7mLGwmUci-2BLaXswv9WX1yTgqn3Wad-2FotHhzHgSNAZbVBJj1aMZkUIYrPmBjqxtAaeeqt21RcsdAArzNHb6e4z58UsRGvvF6onQXngUyYpNawBQll3xW8LYxtFtaroPSH-2FpqzABx853oZqlXVpfc7-2B7CVdcJf57SUbvVfp3cfZB1eLmuoglXBg3Lb0-2BRgQbdy27QNI-2BQi6x8THa-2BRqjWQdw-3D-3D)):** long euro, long US bonds (especially the long end), short dollar. He frames the bond leg as needing a catalyst, most likely a weak US jobs report, so it's a "wait and try it around payrolls" trade rather than a chase. - **The Swiss franc as the new funding currency (Hardy, [Saxo Market Call](http://url7324.matterfact.com/ls/click?upn=u001.idHmPrr2Geh7KYLAsTy7NkrIVb-2FgA4pmf2rMXQwGcOhOQqbQtB3RztXX4t3jqW-2FmFp19czg1oHeCaUlOuNYo4hpMEEkh3Fr2xlxMI-2Bq2vqpACEC0TE2-2Bs12hM349FY1mLkn8os4vYowvjOpdEJaKgw-3D-3DGJIK_7mLGwmUci-2BLaXswv9WX1yTgqn3Wad-2FotHhzHgSNAZbVBJj1aMZkUIYrPmBjqxtAaeeqt21RcsdAArzNHb6e4z3Ifz9eoKb1Zr2hwVde3G4Emh7dxTMTi-2BMqv2bbWQBwJUhUgQgwMcj0ji5-2F18uNkRVDx4h8-2FgS85gUr0ys9qwUnJ0zxYd1L4RkVaS0TA5Erehqnmgu-2F8JbljDy9oCMn2ng-3D-3D)):** with the SNB reportedly parked at zero through 2027, Hardy "kind of likes the idea of the Swiss franc carry trade" taking over from the yen, funding higher-yielding currencies with cheap francs. He frames CHF vs JPY as a study in extremes: "Swiss franc egregiously overvalued, Japanese yen egregiously undervalued." - **Short dollar/yen and short dollar/Swiss (both hosts, The Macro Trading Floor):** flagged as crowded, which cuts both ways, crowded trades can keep working, but they're where the violent reversals start. - **Patience on the yen (Hardy):** he's explicitly *not* short dollar/yen yet, "very late in the game" on yen weakness, but "sitting on my hands" waiting for the chart to turn first. --- ## Read-throughs - **Euro/yen and euro/Swiss:** Brent Donnelly's key observation is that euro and yen are moving together right now, euro/yen "hasn't really moved that much." So a "long defensive currencies" view (long euro, short dollar/yen, short dollar/Swiss) is really one dollar bet wearing three hats until the yen develops its own story. Meanwhile **euro/Swiss hit its highest since January** as the SNB-at-zero story took hold. - **Bunds and gilts vs Treasuries:** the whole complex is being pulled by a steepening US curve, 30-year Treasuries at their highest since 2007. Peccatiello notes Japanese long-end forward rates near **4%** against roughly **5.5%** in the US, part of why he thinks US bonds are the better long. - **The Nikkei and yen-funded carry:** the Nikkei *rose 4%* on the Friday of the intervention even as the yen surged, for now. The read-through everyone fears is the reverse: a sharp yen rally that forces a carry unwind and drags risk assets down with it. - **August seasonality and the VIX:** Guy Adami and Danny Moses on [RiskReversal](http://url7324.matterfact.com/ls/click?upn=u001.idHmPrr2Geh7KYLAsTy7NkrIVb-2FgA4pmf2rMXQwGcOiA8WvD6sMcSMBDQI1wKoXYe9lYBOHdqPfhYx9XheIZPi4-2BFfC-2FhKdpf2WbrKzX0uCiCUXd6gIP5fiiODNwbpoiKVJ38FvBQoQMhhk2d4Se2Q-3D-3DJqKO_7mLGwmUci-2BLaXswv9WX1yTgqn3Wad-2FotHhzHgSNAZbVBJj1aMZkUIYrPmBjqxtAaeeqt21RcsdAArzNHb6e4z3rMGLka58JCa5YMcTNbZFAmy-2BEGcNp-2BhWBqrUuhB-2Fhame1Rx7FU-2BpXQqipO9CgVOpxGLqR6Xh89RVDiLG45JAgrrEV0uOTBHuo3gy40whx-2BYYeRVrZPWIU-2BnW3fMfgIPQ-3D-3D) revisited the August 2024 playbook: dollar/yen fell from 161 to 157 in about five minutes on a soft July CPI print, and by August 5 the equity market cascaded and the VIX spiked as the yen carry trade unwound. Their warning: this time Japan *also* has a deteriorating bond market, so it's "a relationship problem, they're going to have to pick one, and in picking one it screws up the other." August is historically the year's most volatile month; nobody wants to be complacently short yen into it. --- ## What changed - **Japan crossed a threshold.** With ~¥18-19 trillion spent this year, 2026 intervention now exceeds all of 2024, and the credible estimate of remaining firepower (~¥5-6 trillion) is new and specific. The market will start pricing "Japan is nearly out of bullets." - **September became live for the BoJ.** A week ago the next hike was a distant October call; Ueda's tone pulled it forward. - **The franc entered the carry conversation.** The SNB-at-zero-through-2027 story is a genuinely new theme; CHF as a funding currency alongside the yen wasn't on the radar two weeks ago. - **The Fed handed the wheel to the bond market.** Warsh's "no forward guidance" style means long-end yields, not the Fed funds rate, are now doing the tightening, and driving the dollar. --- ## Get the full transcripts on Matterfact This briefing was produced with Matterfact, which indexes the complete, full-text transcripts of 120M+ podcast episodes alongside SEC filings, earnings calls, and financial datasets. 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