Carry Trade
Borrowing money in a low-rate country and investing it where rates or returns are higher to capture the gap — the Japanese yen is the classic example (yen carry). When it unwinds, markets shake.
Carry trade = borrow a low-rate currency (e.g., the yen) → invest in higher-rate, higher-return assets → capture the rate/return gap
When Japan keeps rates low and the yen is weak, carry trades are active and money flows into risk assets.
In plain terms
A carry trade means "borrowing money where interest rates are low and investing it where interest or returns are higher," pocketing the difference. Because Japan kept rates near zero for a long time, the yen is often the currency borrowed, making the "yen carry trade" the classic case.
For example, borrowing yen at almost no cost and putting it into U.S. stocks or bonds earns the rate gap. It works well while conditions hold, but when the mood changes, it all unwinds at once and trouble follows.
What it tells you
The carry trade shows "how global money flows along interest rate gaps." When Japan keeps rates very low, borrowed yen spreads into assets worldwide; when Japan raises rates or the yen strengthens suddenly, that money is pulled back in a hurry.
When this "unwinding" happens all at once, stock markets around the world swing together (see the case below for what actually happened in August 2024).
Formula
Carry trade = borrow a low-rate currency (e.g., the yen) → invest in higher-rate, higher-return assets → capture the rate/return gap Unwinding = selling those assets to repay the loan and buying back the low-rate currency
What high or low means
When Japan keeps rates low and the yen is weak, carry trades are active and money flows into risk assets. Conversely, when Japan raises rates or the yen spikes, pressure to unwind builds.
When U.S. and Japanese rate directions diverge (U.S. high, Japan low), carry trades tend to grow. The gap between the two countries' rates is what creates their scale.
A carry trade has a structure of "earning steadily while things are quiet, then blowing up all at once." Because it invests with borrowed money, leverage is large, and if the exchange rate suddenly moves the other way, big losses and chain liquidations happen in an instant.
Its size is hard to measure precisely, so it is hard to predict how far the unwinding will spread. That is why it stays invisible in normal times and shakes the market hard when it breaks.
The carry trade belongs to the macro and currency domain. This term is background knowledge for understanding market news. (※ Our screens deal with the SEC-filed financials of individual companies.)
In early August 2024, the Bank of Japan raised rates and the yen surged, and yen carry trades were unwound all at once. Money that had borrowed low-rate yen and invested around the world was pulled back in a hurry, dumping assets in the process.
In the aftermath, Japan's Nikkei index plunged more than 12% in a single day on August 5 (its largest drop on record), and global markets including the U.S. and Korea fell sharply alongside it. It showed how fiercely a normally quiet carry trade can shake markets when it unwinds.
Metrics to read alongside
See it in real stocks
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This explanation is for information and reference only and is not a recommendation to buy or sell any security. Investment decisions and their consequences are your own.