Newsletter · 2026-08-18 · Ashutosh Agarwal

Even the Dollar Bulls Fold as JPMorgan Cuts Its Long Dollar Bet - The Dollar Brief - Week of August 18, 2026

The Dollar Brief for the week of August 18, 2026. JPMorgan's currency desk cut most of the long-dollar position it had run since May while an independent macro shop went outright short, leaving the whole trade resting on whether Kevin Warsh is a credible dove in hawk's clothing or a chair the market will force to hike.

The Dollar Brief

Week of August 18, 2026: Even the Dollar Bulls Fold as JPMorgan Cuts Its Long Dollar Bet

For most of this year, the safe career move was to be long the dollar. This week, the people who ran that trade started quietly stepping off it.

The clearest tell came from JPMorgan's own currency team, which has been bullish since May and just admitted it has cut most of that bet. On the other side, one of the more disciplined macro shops in the business put "short the dollar" at the very top of its conviction list. The dollar slipping under 100 on its main index is no longer a one-week wobble, it is starting to look like the professional base case for the rest of the year.

But here's the thing everyone keeps circling back to: whether the dollar keeps sliding or snaps back depends almost entirely on one man, Fed chair Kevin Warsh. And this week two heavyweight voices reframed why he matters for the currency, one arguing he was hand-picked precisely to keep the dollar stable, the other insisting the market will force him to raise rates whether he likes it or not.

Here's the week, in plain English.

TL;DR

Even the dollar bulls are folding. JPMorgan's FX strategy team, "pretty constructive on the dollar since mid-May," said it has now "reduced a bulk of… the exposure," keeping only a "bullish bias,"a notable climb-down for a desk that rode the call all year (At Any Rate, Aug 14).
A marquee macro shop is now openly short. Andreas Steno Larsen said "the highest conviction from our now-casting is a weaker dollar… the final piece in the puzzle," and confirmed "we took that lean in our trading book to be short the dollar" (Real Vision, Aug 17). ("Now-casting" = estimating what the economy is doing right now from live data, before the official numbers land.)
The whole dollar trade is really a bet on Warsh, dovish read. Darius Dale argued Warsh "was chosen for the job because he's… the most credible dove in hawk's clothing," installed because Treasury Secretary Scott Bessent concluded "the path to getting lower interest rates starts and ends with a stable U.S. dollar" (Forward Guidance, Aug 12).
The opposite read: the market will force a hike. Michael Howell titled his deck "Warsh vs. The Markets" and said "my view is 100% that it's going to be a rate hike," with "at least another six months of intensified tightening" to come, because "the market controls interest rates," not the Fed (Macro Voices, Aug 13).
The odds have swung a full 1% this year, toward hikes. "At the start of the year the market was expecting two rate cuts and now the market expects potentially two rate hikes," said Bank Syz's Charles-Henry Monchau, crediting Warsh for proving he is "not the dove that many felt" (Top Traders Unplugged, Aug 12).
A rare Fed voice broke cover, and it was hawkish. Cleveland Fed governor Beth Hammock, an FOMC voter, said last week that "one rate hike will not be enough,"implying not just a hike but several (The Dividend Cafe, Aug 17).
"Inflation is the core disease." Peter Boockvar argued the soft jobs numbers are a symptom of inflation, not a reason to cut: the consumer is "running to stand still," so if Warsh eases into that, he makes the disease worse (RiskReversal Pod, Aug 17).
A contrarian bomb on the yen: the BOJ cure may be a mirage. Jeff Snider argued the popular "just raise Japanese rates" fix misreads the problem, Japan has already hiked to 1% and the yen kept falling, because the real driver is Japan's own institutions sending savings abroad. A hike could even backfire by blowing up Japanese bond holders (Eurodollar University, Aug 13).
160 is the line in the sand for the yen. Bloomberg's Michael Ball said above 160 dollar-yen, traders will treat the rescue as a one-off and pile back into shorts; below it, they rush in ahead of expected Japanese rate hikes (Bloomberg Daybreak, Aug 14).
The emergency yen backstop looks too small. Ball noted the Fed's foreign-central-bank repo line (FIMA) has a cap "around $60 billion… a little bit small for what is needed," given the initial rescue took roughly $80 billion of Japanese bill-selling, so the real signal would be Bessent and Warsh lifting that cap (Bloomberg Daybreak, Aug 14).
A banker put a number on the stablecoin threat to deposits. South State's Tara Edmonds cited a 2025 Treasury study modeling that "roughly 6.6 trillion of transactional bank deposits… could potentially be exposed to migration" into stablecoins under certain scenarios (The Community Bank Podcast, Aug 17).
The tying-it-all-together frame: this is the "bargaining" stage. Luke Gromen argued the yen intervention, stablecoin T-bill demand and Fed swap lines are all attempts to avoid an unavoidable ending, real (inflation-adjusted) interest rates being forced deeply negative for years, as they were after World War II (The Meb Faber Show, Aug 14).

What's new

The dollar bulls start to fold

The most telling moment of the week was hearing a desk that has been right on the dollar all year start to back away from the call.

On JPMorgan's At Any Rate (Aug 14), FX strategy co-head Meera Chandan opened a rare on-air "debate corner" with her own team by admitting the awkward truth: "we have been pretty constructive on the dollar since mid-May. It was a fairly out-of-consensus call back then. The view has worked, but it's been exhausting… we've finally sort of pulled the plug in the sense that… reduced a bulk of… the exposure last week." What's left is only "a bullish bias."

The bull case, made by strategist James Nelligan, is worth understanding because it is the sober version, not a boom, just a grind. "The dollar is still cheap to real yield spreads on our models," he said, and there's "too much focus on… the next payrolls print, the next CPI print." Zoom out, he argued, and a strong economy (accelerating manufacturing surveys, low jobless claims) plus a shrinking labor supply from retirements and less immigration "could potentially be inflationary down the road." His conclusion: "you can have a slow grind stronger in the dollar if the carry environment persists." (The "carry" here just means the dollar pays a higher interest rate than most rivals, so you get paid to hold it.)

A colleague on the desk took the other side, and bluntly. The big rates move earlier this year, he said, "was really about a turn in the labor market data… that's obviously basically… collapsed here over the course of the last couple of months." Inflation isn't running away either, "the three-month run rate of core CPI, it's only about 1.6%." Put that against "good global growth, curve steepening… and dollar length here across the market" and "that to me is not really an environment which the dollar is going to obviously… appreciate over the next couple of months."

Co-head Arindam Sandilya split the difference with the single most useful observation of the week: strip out the intervention, and the dollar has basically ignored the bad news. "If you look at a chart of DXY and strip out the move from 101.50 to 100, bulk of which was sponsored by the… intervention episode, the dollar hasn't really responded much to the ebb and flow of U.S. data." His reasoning is that this Fed is unusual: "when the Fed goes, the Fed really goes," yet the market is priced for fewer than two hikes because no one is sure how Warsh operates. His verdict, forced to pick: "gun to my head… the next Fed move is a hike," and history shows "a very consistent 5% type of appreciation in the DXY" in the six months before a first hike. So if you had to hold one position for six months, "that position has to be bullish."

That's a desk arguing itself to a near-draw. Which is the point: even the house that has been long and right is now neutral-with-a-lean.

Contrast that with the cleanest bearish statement of the week. On Real Vision's Macro Mondays (Aug 17), Andreas Steno Larsen of Steno Research said flatly: "the highest conviction from our now-casting is a weaker dollar. It's kind of the final piece in the puzzle." His logic is a chain: the odds of a US inflation flare-up look low, growth is only mediocre, "which… will lead the Fed to be wrong-footed on their main conclusions for the economy for the rest of the year, which in turn leads the market to reprice the Fed in a dovish direction." A weaker dollar follows, "and with the weaker dollar, a load of repercussions come, mostly positive for the global financial markets." He was honest about how it's going: "it's certainly been the right lean since we took that lean in our trading book to be short the dollar. It's not like it's been a home run trade, but it's been the right lean." His timing claim: his live-data reads tend to run "six, seven weeks" ahead of the official numbers, and the price action is "starting to look pretty promising" into the fourth quarter.

So the honest state of play: the sell-side is capitulating from bullish to neutral, and the sharper independent shops are outright short. The bar for a firmer dollar now sits squarely on the Fed.

The whole dollar trade is really a bet on Warsh

If the dollar's direction is a Fed story, then this week gave us the two cleanest, and opposite, versions of what the Fed does next.

Start with the dovish, and frankly more original, read. On Forward Guidance (Aug 12), Darius Dale of 42 Macro laid out a theory that reframes the whole Warsh question: he isn't a hawk, he's a dove wearing a hawk's costume, and the costume is the point.

"This is why Kevin Warsh was chosen for the job," Dale said, "because he's the best, most credible hawk or most credible dove in hawk's clothing that can guide us to… the kind of structural, low, easy monetary policy that we… need in order to keep this game going." The "game" is managing a country with debt around 100% of the size of its economy, a level not seen since just after World War II, and this time "we haven't been in war. We haven't been in recession either."

The link to the dollar is the whole argument. Dale said Bessent worked this out back in January: "Hey, Mr. President… I know you want lower interest rates. The path to getting lower interest rates starts and ends with a stable U.S. dollar." You cannot install someone the world sees as a political puppet, "because you're going to send a signal to the world's capital allocators, of which 30% of the treasury market is owned by foreigners." Warsh, by contrast, is "credible enough with the bond market and credible enough with the currency market" to buy the room. In this telling, the hawkish talk is the tool that keeps the dollar respectable so that easier policy becomes possible later, Dale expects the Fed's five internal task forces to deliver a "surprisingly dovish outcome" in "the next… three to six months… maybe six to eight months," which the rates market has not priced.

He's candid that it's a tightrope, because the very thing that's good for the dollar and stocks is bad for bonds: keep the economy humming, and "people aren't going to want to be long bonds… they're going to want to be long everything but a treasury bond." His grim shorthand for the two ways it goes wrong: "cutting too much winds up with war. Printing too much winds up with civil war."

Now the mirror image. On Macro Voices (Aug 13), Michael Howell of Cross Border Capital, whose slide deck was literally titled "Warsh vs. The Markets,"said Warsh's intentions barely matter, because "central banks don't control interest rates. They may think they do. The market controls interest rates, and it's the long end which drives the short end, not vice versa."

His read of rising bond yields is that they're not about deficits or drama but about a genuinely strong economy: the climb is "all about strong nominal GDP growth," which "is putting a lot of pressure on the front end." And so "the Federal Reserve can't resist that very easily." Asked point-blank whether the next move is a hike or a cut, Howell didn't hedge: "my view is 100% that it's going to be a rate hike." His favorite tell is the two-year Treasury yield, which he says has predicted the direction of Fed policy correctly "85% of the time" (he even ran the history through an AI model to check): and it's pointing up. His forecast: "at least another six months of intensified tightening by the Federal Reserve… before there is any hint of an inflection," on a path that "looks remarkably like late 2021, early 2022,"a period in which, he reminded listeners, "the S&P dropped 25% and Bitcoin dropped 75%."

Two respected macro thinkers, same chair, opposite conclusions, and the dollar hangs on which is right. If Dale is right and the hawkishness is theater, the dollar drifts lower into a dovish reveal. If Howell is right and the market drags rates up, the dollar bulls get the last laugh.

The rate debate, with fresh voices

Around those two poles, the week added texture worth keeping.

The most quotable came from Peter Boockvar of BFG Wealth Partners on the RiskReversal Pod (Aug 17), who reframed the "soft data means cut" logic entirely: "inflation is the core disease of the economy right now. And the slowdown in hiring that we've seen in the labor market… is the symptom of those inflation issues." His picture of the squeezed consumer is vivid, wage growth "is moderating to the point where it's growing really no more than the pace of inflation," so the average household is "running to stand still." The upshot: if the labor market weakens because inflation is eating everything, cutting rates treats the symptom and feeds the disease. That, he said, is Warsh's genuinely hard problem: "if labor market starts to weaken, but it's because [of] high inflation, does Kevin Warsh respond… by cutting rates? Or does he still remain focused on taming inflation?… Now it's getting really complicated."

The odds themselves have moved a remarkable distance. On Top Traders Unplugged (Aug 12), Bank Syz chief investment officer Charles-Henry Monchau captured it: markets braced for a chair who would act like "a White House… speaker," and instead got someone talking tough on inflation. "The shift in Fed rate expectations has been pretty spectacular. At the start of the year the market was expecting two rate cuts and now the market expects potentially two rate hikes,"a full 1% swing "in a matter of months." Monchau's read is that Warsh is doing it on purpose to protect the institution: "he needs to show that the Fed is indeed independent… the Fed is a committee. The chair is here to manage the committee, and… for the time being it doesn't have a majority." He also flagged something easy to miss: even now, the Fed's balance sheet has quietly grown "by more than 200 billion dollars since the start of the year" as the Treasury and Fed work together to keep long-term yields capped, issuing more short-term bills and buying back longer bonds.

And for the first time in a while, an actual Fed official said something concrete. Per David Bahnsen on The Dividend Cafe (Aug 17), Cleveland Fed governor and FOMC voter Beth Hammock said "one rate hike will not be enough,"a line that implies both a hike and more to follow. Bahnsen's own read on Warsh's silence is that it's deliberate policy: the "low forward guidance, low signaling" posture "is itself doing some financial tightening… and the chairman likes that." He also flagged an underappreciated support under the economy: tariff refunds flowing back after a Supreme Court decision, "$25 billion in May, $50 billion in June," mid-$30 billions in July, "well over $100 billion that's come back into the private economy," offsetting what might otherwise have been layoffs and cancelled projects. It helps explain why the economy feels neither hot nor cold, and why the bond market shrugged off a soft retail-sales print (down 0.6% in July) and let yields rise anyway.

The yen: is the "just hike" cure a mirage?

Almost everyone agrees on the near-term choreography for the yen. The genuinely new idea this week is a challenge to the cure itself.

First, the choreography. On Bloomberg Daybreak (Aug 14), Bloomberg macro strategist Michael Ball described 160 dollar-yen as "the line in the sand… the pivot." Above it, "people will be more empowered to short it. Traders will think the intervention was a one-off." Below it, the "feedback loop" reverses and "people will probably try and rush into it to get ahead of… a more structural change,"meaning actual Japanese rate hikes, now "about two-thirds priced" for September, with October going to near-certain if September is skipped, and a "back-to-back" Sept–Oct move possible. Positioning, he said, has "cleaned up nicely… a much flatter position," so the risk now cuts both ways.

Ball also added a concrete new wrinkle to the plumbing story we've been tracking. The Fed's emergency line that lets foreign central banks swap their US Treasuries for dollars without dumping them on the market, the FIMA repo facility, has a standing cap "around $60 billion, which… is a little bit small for what is needed," given the initial rescue required roughly "$80 billion of bill selling by the [Japanese Ministry of Finance]." It hasn't even been used yet, because at about "25 basis points over… a normal repo rate," it's deliberately expensive. So the real signal to watch, Ball said, is whether Bessent and Warsh raise that cap, "which then would be a much bigger signaling effect."

Now the challenge. On Eurodollar University (Aug 13), Jeff Snider took a wrecking ball to the consensus that a Bank of Japan hike will fix the yen. The standard story, traders borrow cheap yen, buy higher-yielding dollars, and that sinks the yen, is, he said, only "the cartoonish version." The proof it's incomplete: Japan has already raised its policy rate to 1% with two hikes, and Japanese bond yields have "dramatically closed the gap with U.S. Treasury rates," yet "the yen remains near multi-decade lows, and it keeps going down even as that gap gets closer."

His alternative is that the real, far bigger "carry trade" happens inside Japan: pension funds, insurers and banks with long-term obligations "can't meet those obligations merely by holding cash or low-returning domestic assets," so decade after decade they send savings abroad. "It's Japan's own financial system voting with its balance sheet." Squeezing out foreign speculators, therefore, "proves so very little", "officials squeezed the tourists, but the ocean of institutional money beneath them kept moving." And a rate hike might make it worse, because higher Japanese yields inflict losses on the institutions holding trillions of Japanese government bonds: "a 3% nominal yield accompanied by large potential capital losses and an unstable central bank policy… is going to be less attractive than a lower nominal return elsewhere with better liquidity."

That reframes the US–Japan tension as a genuine standoff, not a coordination hiccup. Bessent wants aggressive Japanese hikes; Japan's own prime minister is reluctant, worried that tightening into a fragile economy makes things worse, and, Snider argues, she may be right to worry even if she's wrong on the mechanics. His line lingers: "the yen's decline is not contradicting a healthy economy. It is revealing the absence of one." If Snider is right, the next move above 160 leaves Tokyo with the same bad options, burn more reserves for a temporary bounce, or hike into its own bond market.

Stablecoins: a banker does the math

The stablecoin story keeps graduating from a crypto sideshow into a genuine dollar-plumbing question, and this week it got its most grounded voice yet: an actual community banker.

On The Community Bank Podcast (Aug 17), Tara Edmonds of South State Bank walked through why banks are suddenly paying attention, and it comes down to one number. "I always go back to… April of 2025," she said. "The Treasury issued a report that examined what increased stablecoin adoption could mean for banks, the Treasury markets and the dollar. And one of the numbers that got a lot of attention was roughly 6.6 trillion of transactional bank deposits that could potentially be exposed to migration under certain scenarios." She was careful, "I'm not suggesting 6.6 trillion is going to leave the banking system,"but "the fact that the Treasury was modeling the potential impact at that magnitude… tells you something important."

The mechanism matters for the dollar and for the bond market. A stablecoin issuer holds reserves that "can include… bank deposits, short-term U.S. treasuries, and other highly liquid permitted assets under the Genius Act." So money that leaves a bank deposit for a stablecoin often ends up… buying Treasury bills. That's the crux of the "stablecoins are a new buyer of US government debt" thesis, echoed from the funding side this week by Bank Syz's Monchau, who called stablecoins a way "to find a new… source of buyers for the treasury." Edmonds also underlined the rule at the heart of the current bank-vs-issuer fight: under US law, an issuer "cannot pay the stablecoin holder interest directly simply for holding that stablecoin." (That's exactly the provision the big banks are trying to keep in place, and it's why South State's own first step is a "tokenized deposit," which keeps your money as a bank liability rather than letting it walk out the door.)

The frame that ties it together: we're in the "bargaining" stage

If you want one lens for all of the above, the yen rescue, the stablecoin T-bill demand, the swap lines, Luke Gromen offered it on The Meb Faber Show (Aug 14).

Gromen's starting point is arithmetic: the US "has a debt load that can't afford rates above 4.7 on the 10-year. Real rates have to go lower and lower and lower over the next five to 10 years." (A "real rate" is the interest rate after subtracting inflation, the true cost of money.) He then borrowed the five stages of grief to describe where policy is. All the clever fixes, he argued, are "bargaining": "maybe Bessent can intervene in the yen and he can do stablecoins and… T-bills back stablecoins. And that'll lower interest. And maybe Japan and others can use the [FIMA] swap lines… this is bargaining. We still have to get to depression and acceptance."

And acceptance, in his telling, is the post-war playbook: the last time US debt was this large relative to the economy, in 1946, it was cut roughly in half within five years through "capital controls, significant inflation, and real rates in the United States that bottomed at negative 13%." He ran the same scenario for today's debt and found you'd need "real rates… negative 12 to negative 16% for five straight years,"brutal for anyone holding long-term bonds, but, he argued, "mechanically, economically… the easiest thing in the world." You don't have to buy his conclusion (he's talking his book, long gold, long Bitcoin, short bonds in real terms) to find the frame useful: every dollar-support tool in the news right now is, in his view, a way to buy time rather than a cure.

The debate

Bullish, bearish, or neutral on the dollar? For the first time this year, the desks themselves are split.

Neutral, leaning bull (the capitulation): JPMorgan cut most of its long-standing dollar longs, keeping only a "bullish bias," with its own strategists arguing to a near-draw, cheap on real-yield models and a likely eventual hike on one side, a collapsed labor-market impulse and cheap 1.6% core CPI on the other (At Any Rate, Aug 14).
Bearish (the sharp-shop view): Steno Research is outright short, calling a weaker dollar its "highest conviction" and the "final piece" of a Goldilocks setup into Q4 (Real Vision, Aug 17).

Does Warsh hike, or is the hawkishness a costume? The single most important dollar question, argued two ways.

He hikes, because the market makes him: Howell says "100%" a hike, "six months of intensified tightening," because "the market controls interest rates," and the two-year yield is pointing up (Macro Voices, Aug 13). Backed by Boockvar ("inflation is the core disease") (RiskReversal Pod, Aug 17) and Hammock's "one hike will not be enough" (The Dividend Cafe, Aug 17).
It is a costume, with a dovish reveal coming: Dale says Warsh is "the most credible dove in hawk's clothing," installed to keep the dollar stable so easier policy is possible, with a "surprisingly dovish" task-force outcome in 3–8 months that isn't priced (Forward Guidance, Aug 12).
The tell: Jackson Hole, under two weeks out. Bahnsen thinks the market shouldn't expect a signal, Warsh's silence is itself the policy (The Dividend Cafe, Aug 17).

Will a Bank of Japan hike actually fix the yen? The consensus says yes; a strong contrarian says no.

Yes: a real hike changes the fundamentals: the near-term view priced by markets and echoed by Bloomberg's Ball, ~two-thirds odds for September, back-to-back hikes possible, 160 the pivot (Bloomberg Daybreak, Aug 14).
No: the driver isn't the rate gap: Snider says Japan already hiked to 1% and the yen kept falling; the real force is Japanese institutions sending savings abroad, and a hike could backfire by hitting Japanese bondholders (Eurodollar University, Aug 13).

The trades in play

Only where a podcast named an actual expression:

Short the dollar into Q4. Steno Research says it is short the dollar in its trading book and calls dollar weakness its highest-conviction call, with a six-to-seven-week lead from its live-data models and "promising" price action, while conceding "it's not… been a home run trade… but it's been the right lean" (Real Vision, Aug 17). (An independent macro shop's book position.)
Stay long the dollar via carry, not spot, if you must be long. JPMorgan neutralized its outright dollar bet but kept a "partially constructive view through… carry baskets," on the logic that the eventual next Fed move is a hike and the DXY has historically risen ~5% in the six months before one (At Any Rate, Aug 14). (A bank FX desk's residual positioning.)
Own gold and hard assets as the "acceptance" trade. Gromen's structural call is for years of deeply negative real rates that are "great for gold… great for Bitcoin… terrible for bonds… on a real basis," sizing gold at "at least 5 to 10 percent" of a portfolio (The Meb Faber Show, Aug 14). (A strongly-held structural view, treat as thesis, not a timing call.)

Read-throughs

The burden of proof has flipped to the dollar bulls. With even JPMorgan neutralizing its long and independent shops going short, a softer dollar into year-end is now the path of least resistance, unless the economy is as strong as Howell and the bull camp think and the Fed is forced to hike. Watch the two-year Treasury yield and Jackson Hole (under two weeks out) for the resolution.
Warsh is the dollar trade. Whether you're bullish or bearish, the honest position is a view on one man. The dovish "credible dove in hawk's clothing" thesis and the hawkish "market forces his hand" thesis point in opposite directions for the currency, and the first hard data to referee it is the September 16–17 meeting, with the August CPI/PPI/PCE prints in between.
On the yen, watch 160 and the FIMA cap, not just the Bank of Japan. Above 160 invites fresh shorts; a lift of the ~$60 billion FIMA cap would signal Washington and Tokyo are dug in. But keep Snider's warning in the back pocket: if the yen's problem is structural capital outflow rather than the rate gap, a Japanese hike may disappoint, and force yet another round of intervention.
Stablecoins are now a deposit-and-Treasury story. A community banker citing a $6.6 trillion Treasury deposit-migration model is a long way from crypto Twitter. If even a fraction migrates, it drains bank funding and creates a new, price-insensitive buyer of T-bills, reinforcing the bill-heavy funding strategy the Treasury is already running.
A midterm risk premium is starting to get named. Bahnsen's base case is "a blue wave" in November, offset by a Republican funding edge that fades after Labor Day (The Dividend Cafe, Aug 17). No one is yet pricing a clear dollar consequence, but a contested political backdrop is one more reason foreign capital may demand a little more to hold US assets, worth tracking as the calendar turns.

What changed this week

The sell-side started capitulating on the dollar. JPMorgan, bullish and right since May, cut most of its long, and an independent macro shop went openly short. Neutral-to-bearish is now the professional lean, not just a gold-bug one.
The Warsh debate crystallized into two clean, opposite theses, both explicitly about the dollar: he's a dove in disguise installed to keep the dollar stable (Dale), or the market will force him to hike regardless (Howell).
A rare, hawkish Fed voice appeared, Beth Hammock's "one hike will not be enough,"against a backdrop where most governors have gone quiet and Warsh is deliberately silent into Jackson Hole.
The yen consensus got its first serious challenge: Snider's argument that a Bank of Japan hike may not fix, and could worsen, the yen, because the real driver is Japan's own institutional capital outflow.
The stablecoin story got a banker and a number ($6.6 trillion of potentially migratable deposits), moving it firmly into the dollar-plumbing conversation, with Gromen supplying the umbrella frame: these are all "bargaining"-stage tactics to delay years of negative real rates.

Levels referenced are approximate, from mid-August US sessions: the dollar index below 100 (down from ~101.50 before the late-July yen intervention); dollar-yen back around 159–160 after a post-rescue low near 155, with 160 the widely-watched pivot; US September rate decision on Sept 16–17, with the market roughly split between hold and hike after a 2026 swing from two priced cuts to as much as two priced hikes; the 10-year US Treasury yield in the mid-4% range and the 30-year above 5%; headline CPI ~3.4%; Bank of Japan policy rate 1%, with a September hike ~two-thirds priced; stablecoins ~$300 billion outstanding today; the Fed's FIMA repo cap ~$60 billion.