The Japanese yen has surged ahead of an expected Bank of Japan interest rate increase next week, putting fresh pressure on one of the market’s most popular carry trades.
The move is forcing investors to reassess their exposure to the yen as expectations grow that Japan could tighten monetary policy more aggressively than previously expected.
Yen Rally Pressures the Carry Trade
The yen carry trade involves borrowing in Japan at relatively low interest rates and investing that money in higher-yielding currencies or assets.
For years, this strategy benefited from Japan’s ultra-loose monetary policy and low borrowing costs.
However, the trade becomes less attractive when the yen strengthens or Japanese interest rates rise.
That is exactly what markets are now starting to price in.
Expectations of a Bank of Japan rate hike, signs of capital returning to Japan and pressure from the United States have all contributed to the yen’s recent strength.
Carry Trade Unwind Accelerates
The latest yen rally is prompting investors to reduce short positions in the currency.
Charu Chanana, chief investment strategist at Saxo, said the carry trade is particularly vulnerable because the unwind has started before the Bank of Japan has even delivered its expected rate increase.
Some traders have already cut their short-yen positions. However, overall exposure remains significant.
If the yen continues to appreciate, investors may be forced to reduce leverage even more aggressively. That could create a self-reinforcing cycle of yen buying.
Yen Carry Trade Exposure Reaches Record Levels
The exact size of the global yen carry trade is difficult to calculate.
However, available data suggest that a substantial amount of capital remains tied to the strategy.
According to a Jefferies analysis of Bank for International Settlements data, cross-border yen borrowing reached a record 360 trillion yen, or around $2.35 trillion, as of March.
That represents the largest build-up in carry-trade exposure in roughly three decades.
A sudden unwind could therefore have consequences beyond the foreign exchange market.
USD/JPY Falls as Yen Strengthens
The yen strengthened to around 152.89 per US dollar on Tuesday, its strongest level since February.
That marked a sharp reversal from levels near 160 per dollar less than a week earlier.
The move also renewed concerns about possible currency intervention.
Masahiko Loo, senior fixed-income strategist at State Street Investment Management in Tokyo, said the break below the 155 level appeared to trigger another wave of yen short covering.
Both leveraged funds and longer-term investors have been reducing their exposure to short-yen positions.
Stop-Loss Orders Accelerate Yen Move
Analysts also pointed to stop-loss orders as a factor behind the rapid move in USD/JPY.
Stop-loss orders automatically trigger when a currency reaches a predetermined price level.
Once several of these orders are activated at the same time, the resulting buying or selling pressure can accelerate market moves.
That dynamic may have contributed to the speed of the yen’s recent appreciation.
Yen Gains Against Popular Carry Trade Currencies
The yen’s strength has not been limited to the US dollar.
The Japanese currency has gained nearly 5% in September against other popular carry trade currencies, including the Mexican peso and Turkish lira.
That broader move suggests investors are reducing exposure across several carry strategies rather than simply adjusting positions in USD/JPY.
Loo said a further unwind could push USD/JPY toward the mid-140s because short-yen positioning remains substantial.
Bank of Japan Rate Hike Expectations Surge
Markets are increasingly confident that the Bank of Japan will raise interest rates.
According to Tokyo Tanshi data, the probability of a 25-basis-point rate hike to 1.25% has risen to 97%.
That compares with only 52% a month earlier.
Markets are also pricing a 27% probability of another rate increase in October and a 61% chance of a hike in December.
These expectations suggest traders are preparing for a potentially more hawkish Bank of Japan policy path.
Investors Remember the 2024 Carry Trade Shock
The current situation has revived memories of the sharp carry trade unwind in August 2024.
At the time, a Bank of Japan rate hike triggered a rapid appreciation in the yen.
Investors rushed to close leveraged positions, creating volatility across global financial markets.
However, analysts argue that the current environment is different.
Markets are now more prepared for tighter Japanese monetary policy, which could reduce the risk of another sudden shock.
Higher Japanese Bond Yields Change the Carry Trade
Another important difference is the rise in Japanese government bond yields.
Japan’s 10-year government bond yield has been trading near its highest level in roughly 30 years.
That gives domestic investors more opportunities to earn attractive returns without moving capital overseas.
Kenneth Goh, director of private wealth management at UOB Kay Hian, said this marks an important shift compared with 2024.
Previously, Japanese investors often needed to look abroad for higher returns.
Today, rising yields at home make domestic assets more competitive.
September 18 Could Be Key for the Yen
Investors are now focused on the Bank of Japan’s upcoming policy decision.
The reaction after the meeting could determine whether the current yen rally represents a lasting shift or simply another short-term squeeze.
If the yen maintains its gains following a rate hike, markets may conclude that the cost of using the currency as a funding source has permanently changed.
That could reduce the attractiveness of the yen carry trade over the longer term.
Risk of Yen Reversal Remains
Despite the recent rally, there is still a risk that expectations have become too aggressive.
If Bank of Japan Governor Kazuo Ueda delivers a less hawkish message than investors expect, the yen could quickly weaken again.
Citi’s foreign exchange desk has warned that market expectations may be too high.
The Bank of Japan may also want to avoid triggering another disorderly market reaction similar to the events of 2024.
Carry Trade Is No Longer a Simple Bet
The yen carry trade has not disappeared.
However, the risks surrounding the strategy have increased significantly.
Higher Japanese rates, intervention concerns and stronger domestic bond yields have made short-yen positions more complicated.
Investors now face both monetary policy and political risks when using the yen as a funding currency.
For now, traders appear reluctant to rebuild large yen short positions ahead of key central bank decisions in Japan and the United States.
The carry trade may still offer opportunities, but the recent yen rally shows that it is no longer the straightforward strategy it once appeared to be.
