What Does The Term "Carry Trade" Mean?

What is the definition of a "carry trade"?

A carry trade is one of the oldest and most popular strategies in global finance. The idea is straightforward. If you can borrow money cheaply somewhere, and invest it for a higher return somewhere else, you can pocket the difference. The bigger the gap between what you pay to borrow and what you earn investing, the bigger your profit.

In practice, the carry trade is almost always done with currencies. You borrow in a country where interest rates are low (like Japan), exchange that money into a different currency where interest rates are higher (like the US dollar or the Mexican peso), and then invest in something that pays the higher rate.

For instance - let's say that the Bank of Japan has its benchmark interest rate at 0.5%, and the US Federal Reserve has its rate at 3.75%. The gap between those two rates is 3.25%. That gap is your potential profit. Borrow in yen at 0.5%, convert to dollars, and put the money into US Treasury bonds yielding around 4%. The math is your friend.

How A Carry Trade Actually Works

An Example a Regular Person Can Picture

Let's strip out all the financial jargon and put this into terms that a regular person would understand.

The Hidden Risk That Wrecks Everything

So if the carry trade is this easy, why isn't everyone doing it?

Two reasons. The first is that everyone IS doing it. The yen carry trade alone is estimated to be worth somewhere between $250 billion and several trillion dollars at any given time, depending on how you measure it. It is one of the largest and most crowded trades in the world.

The second reason is the catch that makes the carry trade dangerous. The exchange rate between the two currencies can move against you. And when it does, it can move fast enough to wipe out years of profits in a single afternoon.

Here is what we mean. Let's go back to our hedge fund trader who borrowed 100 million yen at 155 yen per dollar and invested $645,000 in US Treasury bonds.

Now imagine that instead of a small trader, this is a hedge fund running 10x leverage on the same trade. A 10% currency move turns into a 100% loss. Margin calls go out. Positions get force-liquidated. Other carry traders see the move and start unwinding their own positions, which makes the yen go even higher, which forces more traders to unwind, and so on.

This is not a hypothetical scenario. It is exactly what happened in August 2024.

Case Study: The August 5, 2024 Carry Trade Unwind

On Monday, August 5, 2024, the largest carry trade unwind in modern financial history played out in real time. Here is how it happened.

The Setup

For most of 2023 and 2024, the Bank of Japan kept its benchmark interest rate near zero. The Federal Reserve, meanwhile, had raised US rates to over 5% to fight inflation. The gap between Japanese and US rates was the largest it had been in decades.

Hedge funds piled into the yen carry trade. Borrow yen for free, dump it into anything that paid more, and watch the profits roll in. The trade was working so well that even Japanese retail investors (nicknamed "Mrs. Watanabe" by the financial press) got in on the action.

The Trigger

Two things happened in late July and early August 2024 that broke the trade.

First, on July 31, 2024, the Bank of Japan unexpectedly raised its interest rate from 0.1% to 0.25%. That doesn't sound like much. It was. After almost two decades of Japan basically giving away free money, any rate hike at all signaled that the era of zero-cost yen borrowing might finally be ending.

Second, on August 2, 2024, the US released a jobs report showing only 114,000 new jobs in July, well below the expected 175,000. Investors immediately bet that the Federal Reserve would have to start cutting US rates faster than expected. The interest rate gap between Japan and the United States was about to shrink from both sides at once.

The Unwind

Hedge funds with leveraged carry trade positions did the math and panicked. Within four trading days, the yen surged about 6% against the dollar, going from 161 yen per dollar to 142 yen per dollar.

That sounds modest. It was not. For a leveraged carry trader, a 6% currency move can mean a 60% or 100% loss on the entire position.

Margin calls went out. Hedge funds had to sell their non-yen assets (US stocks, Mexican bonds, Australian dollars, anything they had bought with the borrowed yen) to buy yen back and repay their loans. That selling crushed prices in those markets, which triggered more margin calls, which triggered more selling.

Where Carry Trades Stand Today

As of April 2026, the yen carry trade is back. Despite the August 2024 disaster, the underlying logic of the trade has not changed. Japanese rates remain low (the Bank of Japan's policy rate is now 0.5%), US rates remain higher (the Fed funds rate sits at 3.5% to 3.75% after Powell's final FOMC meeting yesterday), and the yield gap is still attractive enough to draw traders back in.

The trade has been quietly rebuilt over the past year. The Bank of Japan has been very careful to telegraph any policy moves well in advance to avoid another flash crash. The Federal Reserve, now headed for a transition to Kevin Warsh, is signaling a slow path of cuts. Both central banks have learned from August 2024.

Carry Trade	Funding Currency	Investment Currency	Approx. Spread (April 2026)
Yen Carry (Classic)	JPY (0.5%)	USD (3.5-3.75%)	~3.0-3.25%
Yen-Mexican Peso	JPY (0.5%)	MXN (8.0%)	~7.5%
Yen-Brazilian Real	JPY (0.5%)	BRL (10.75%)	~10.25%
Swiss Franc Carry	CHF (0.0%)	USD (3.5-3.75%)	~3.5%
Yen-Australian Dollar	JPY (0.5%)	AUD (3.85%)	~3.35%

The Bottom Line

The carry trade is one of the most powerful and most dangerous strategies in global finance. When it works, it produces steady, almost boring returns. When it breaks, it breaks in spectacular fashion, and it can take entire stock markets down with it.

For an everyday investor, the carry trade is generally not something to do directly - it is a hedge fund game played with massive leverage and complex hedging tools. But understanding it matters because the carry trade affects markets you DO invest in. If your retirement portfolio held US stocks on August 5, 2024, you absolutely felt the unwind, even if you had no idea what the yen carry trade was that morning.

The simplest way to think about it: there is a giant, mostly invisible river of borrowed money flowing from low-rate countries into high-rate ones. When the river is calm, everyone on it makes money. When the river suddenly reverses, anyone who isn't paying attention gets swept away, and the splash hits everyone else on shore too.