Carry-Trade

Donald Trump extended the Israel-Lebanon ceasefire by three weeks on Thursday, pushing the 26 April expiry to mid-May. For speculators holding a yen short built to pay out on that discrete binary, the event has not dissolved; it has moved, into the same fortnight as Scott Bessent’s scheduled Tokyo stopover on his way to Mr Trump’s summit with Mr Xi in China. The shift matters because the dollar-yen floor at 160 is held not by any change in Japanese interest rates but by a new bilateral arrangement. Satsuki Katayama, Japan’s finance minister, threatens intervention; Mr Bessent, US treasury secretary, endorses her by declining to contradict her in public. This is the intervention-acquiescence model: US tacit consent to Japanese currency defence, in lieu of the January pressure on the Bank of Japan to raise rates. ...

Scott Bessent worked at Soros Fund Management across two stints between 1991 and 2015, doing one thing supremely well: spotting the moment when a central bank had mispriced risk and the speculative position on the other side was too large to unwind gracefully. When that moment came, the correction was violent. The people positioned for it made fortunes. Bessent was one of the best. Now he runs the US Treasury. Japan holds roughly $1.2 trillion of American government debt, the largest foreign position — a mix of official reserves and private institutional holdings. If the yen weakens far enough, the private side of that equation starts to shift: life insurers and pension funds find hedging costs too high to justify holding US bonds, and new purchases dry up. US borrowing costs rise. ...

Somewhere between $250 billion and $4 trillion, a ghost lives. The yen carry trade (borrow cheaply in Japan, invest where yields are higher) has been the subject of a strange argument since the August 2024 unwind sent the Nikkei down 12% in a single session. One camp says the trade is dead. The other says it never left. Both cite data. Both sound confident. They cannot both be right, and at USD/JPY 160.46 with the vice finance minister invoking “resolute measures” for the first time in his tenure, the answer has stopped being academic. ...

Predicting when a finance minister will intervene in the currency market is a fool’s errand. The MOF does not publish a schedule. The whole point of intervention is surprise: catching speculators wrong-footed, inflicting maximum pain per yen spent. Anyone claiming to know the date is selling you something. And yet. The decision to intervene is not made in a vacuum. It requires political clearance, diplomatic coordination and tactical conditions that do not appear on demand. These constraints are visible. They can be mapped against a calendar. The result will not be a date circled in red but a window, the period during which the political stars align and the MOF gains the freedom to act. ...

In a long-form interview from the Treasury’s Cash Room on 13 March, a week before the worst single-session bond selloff of his tenure, Bessent compared himself to a lifeguard. Drowning people pull you under, he told the interviewer. Your goal is always to save them. For fourteen months he has had solid ground. When JGB yields spiked in January on fiscal fears around the Takaichi snap election, he called Tokyo and the stress faded within days. When the carry trade wobbled in January, a Fed rate check on dollar-yen was enough. Those problems originated in places he could reach. ...

Within twenty-four hours, the two central banks that matter most for Japanese equity investors held their policy rates steady. The Bank of Japan kept its overnight call rate at 0.75 per cent. The Federal Reserve kept its federal funds rate at 3.50–3.75 per cent. Both decisions were expected. Neither was the story. The story is in the dissents, and in what they reveal about the diverging trajectories of the world’s two largest bond markets, the unwinding of the yen carry trade and why TOPIX, and Japanese financial stocks in particular, are positioned to outperform global indices through the turbulence ahead. ...

Ten days ago, Brent crude was $66. On Monday it touched $119.50 before settling around $93. The Nikkei 225 fell 5.2% on Monday. USD/JPY hit 159.14, one tick from what traders regard as the Ministry of Finance intervention threshold. The UST 10-year yield briefly breached 4.21% before pulling back to 4.13%. And yet the financial system did not crack. This article examines what Scott Bessent spent to keep it that way, what it reveals about the yen’s role in a crisis and why his binding constraint (the 10-year yield) is tighter now than it was before the first missile was launched. ...

In the third week of January 2026, Japan’s 40-year government bond yield surged past 4% for the first time since the bond’s inception, eventually reaching 4.24%. The 10-year JGB yield hit 2.38%, its highest level in 27 years. It was the most violent sell-off in Japanese government debt in decades, and it sent shockwaves through bond markets in New York and London. If you are an American or European investor, you might have dismissed this as a local Japanese story. That would be a mistake. What happens in the JGB market affects your Treasury yields, your mortgage rate and the stability of the global fixed-income market in ways that are not immediately obvious but are profoundly important. ...

The Japanese yen has weakened dramatically against the dollar and the euro over the past four years, falling from roughly 110 to the dollar in early 2021 to above 155 by late 2025. For Japanese investors, this has been painful. For American and European investors, it may be something quite different: an entry point. Currency movements are notoriously difficult to predict, and anyone who claims certainty about where the yen is headed should be treated with scepticism. But the structural forces that drove the yen to multi-decade lows are beginning to shift, and investors who understand those forces can make a more informed judgement about whether yen-denominated assets belong in their portfolio. ...