Carry Traders Rebuild Yen Short Positions After Intervention
Nashnova编辑部
Japan spent nearly $87 billion defending the yen last month, yet the currency slid back toward 160 within two weeks — carry traders are using the post-intervention bounce to reload short positions.
How does the carry trade actually make money?
The engine is the rate gap: the Bank of Japan's policy rate sits at just 1%, far below most developed economies. Borrow cheap yen, park the money in higher-yielding assets, and pocket the spread.
This means → every time intervention pushes the yen stronger, carry traders get a better entry price to sell it again — a discount to re-open the same bet.
Ashwin Binwani, founder of Alpha Binwani Capital, bought USD/JPY around 157 and is riding the yen's renewed slide. His view: "Intervention is a gift — a chance to sell yen at a higher level. The carry is too attractive to walk away from."
Who is rebuilding positions — and against what?
CFTC data show hedge funds have halved yen shorts, but State Street's proprietary flow data tell a different story: real-money accounts still hold carry positions — two data sources, opposite conclusions.
The yen is being sold against a basket of G10 currencies, with the Australian dollar drawing the most interest, followed by the euro, US dollar, Canadian dollar, and sterling.
Bloomberg strategist Mark Cranfield notes that a rise in one-year yen forwards typically tracks outright dollar buying — this reflects traders positioning early for another sustained leg of yen weakness.
What did intervention cost — and did it work?
Bloomberg estimates Japan spent roughly $34 billion on July 31 and about $53 billion the day before — if confirmed, the single-day figure would set a record.
In plain terms = nearly $87 billion in two days, yet USD/JPY now trades at 159.43, almost back to pre-intervention levels.
Yuxuan Tang, head of Asia rates and FX strategy at J.P. Morgan Private Bank, argues the market sees repeated intervention as increasingly costly for Japan. "Unless the dollar and Treasury yields fall meaningfully, carry traders could push the pair back to test 162."
Could a rate hike change the equation?
People familiar with the matter told Bloomberg that Prime Minister Sanae Takaichi's government backs a near-term BOJ rate hike, with the next move possible in September or October.
This means → if the hike materialises, yen borrowing costs rise and the carry spread shrinks directly.
But Carol Lye, portfolio manager at Brandywine Global in Singapore, flags an alternative path: if the yen gets too expensive to borrow, traders can switch to the euro or the Swiss franc as funding currencies — the carry trade doesn't die, it just migrates.
Do political statements actually matter?
US Treasury Secretary Scott Bessent reiterated support for a stable yen, warning that yen weakness risks triggering broader Asian currency depreciation and pledging Washington would go "all in" behind Japan.
Yet Japanese investors themselves are using the intervention window — Ministry of Finance data show last week's foreign-asset purchases hit a two-year high.
Put simply = rhetoric is rhetoric; as long as the rate gap persists, institutions and households follow the same logic — move money out while the yen is briefly strong.
Content is for reference only, not financial advice.