The trade everyone loved is suddenly looking crowded
The yen has been the funding currency of choice for so long that plenty of traders probably treated it like background noise. But Monday’s move said otherwise: dollar-yen fell to its weakest since February, even after a blowout U.S. jobs report and higher Treasury yields — the kind of setup that was supposed to keep the dollar comfy in the driver’s seat.
Why that matters
That’s the whole twist. The classic carry trade only works when the gap between borrowing costs and returns stays wide and the exchange rate behaves itself. Right now, both of those assumptions are wobbling. Japanese yields have climbed, the Bank of Japan is still leaning hawkish, and the market is now pricing in more tightening from Tokyo while Washington is openly prodding Japan to keep lifting its game.
The scary part: the exit door is small
JPMorgan warned that roughly 16 trillion to 17 trillion yen of bearish yen bets were still hanging out there. In plain English: a lot of people are on the same side of the boat. If dollar-yen keeps slipping below key levels like 155, the fear is that forced buying of yen could turn into a self-feeding stampede.
Big picture
This isn’t just a forex nerd story. A messy carry-trade unwind can spill into stocks, bonds, and global risk appetite like someone knocking over the first domino in a very expensive office tower.