The Japanese yen crossed 162 per dollar this week. That is not a rounding error. That is a 40-year low, a level the currency has not seen since 1986, and the number keeps moving in the wrong direction for Tokyo.
Here’s where I’m at on this: most of the coverage is focused on whether Japan intervenes again. That is the wrong question. The right question is what this collapse is doing to global capital flows — and which assets are quietly repricing as a result.
Start with the mechanics. The Bank of Japan raised its benchmark rate to 1% in June, its highest level since 1995. Didn’t matter. The yen kept falling. The Federal Reserve is sitting at 3.50%–3.75% with markets now pricing in roughly an 83% probability of another hike before year-end. That spread — 250-plus basis points — is the gravitational force pulling the yen lower, and no rate hike of 25 basis points from Tokyo is going to fix it.
Tokyo already tried the direct approach. Japan’s Ministry of Finance spent roughly Â¥11.7 trillion — around $72 billion — on spot-market intervention in late April and early May. The yen bounced briefly and then resumed its slide. Speculators noticed. CFTC data shows short positioning on the yen near approximately $11.3 billion, close to the highest in two years. When a $72 billion intervention only buys you a few weeks of relief, traders get the message.
The Carry Trade Is Back. Louder Than Before.
What this means practically: the yen carry trade — borrow cheaply in Japan, invest in higher-yielding dollar assets — is the most crowded it has been in years. That trade worked beautifully in 2024. It blew up spectacularly in August of that year when the BOJ surprised markets with a rate hike. Now it is back, and it is larger.
Slight tangent, but it matters: the last time this trade got this crowded and this consensus, the unwind was violent and fast. The August 2024 yen spike caused a single-day drawdown in global equities that briefly looked like something much worse before reversing. The positioning today is arguably more extreme.
The second-order effects are the part Wall Street is underpricing. Japan imports almost all of its energy, and oil is priced in dollars. When the yen weakens, every barrel of oil costs Japanese companies more in local currency terms. That feeds directly into input costs and inflation — which is exactly the last thing the BOJ wants to manage while also trying to normalize rates without cratering the economy. Prime Minister Takaichi’s government reportedly released a draft economic blueprint urging the BOJ to align its policy with government growth priorities. That is not a signal of aggressive tightening ahead.
Who Benefits. Who Gets Hurt.
Japanese exporters — Toyota, Sony, Nintendo, Fanuc — are printing yen profits from dollar-denominated revenue. Every 10-yen depreciation against the dollar adds meaningfully to operating income for major exporters. This is why the Nikkei has held up even as the currency collapses: the index is weighted toward companies that benefit from yen weakness.
The losers are Japanese domestic consumers and importers. Food, energy, and electronics all cost more in yen terms. The purchasing power story inside Japan is quietly deteriorating even as the equity market looks fine from the outside.
For global investors, the yen at 40-year lows creates a specific opportunity. Unhedged Japanese equity exposure is toxic right now for a dollar-based investor — the currency drag eats the stock gains. But hedged Japanese equity exposure is a different calculation entirely. And for the carry trade itself, the risk-reward has shifted: the yield is still there, but the intervention risk is real and growing.
The Number to Watch
Thursday’s U.S. nonfarm payroll report — released a day early ahead of the July 4 holiday closure — could be the most important data point for USD/JPY in months. A strong jobs number cements the Fed’s hawkish stance and pushes the yen lower. A weak number gives Tokyo a window. Analysts suggest coordinated U.S.-Japan intervention would be more effective than unilateral action from Tokyo, but that requires Washington to cooperate — not a given.
The yen is already past 162. Some forecasts have it reaching 164 by early 2027. What is not priced is a disorderly move in either direction. Those are the moves that historically drag everything else with them.
For informational purposes only.