Nagham Hassan, Market Analyst at etoro
Abu Dhabi, United Arab Emirates – August , 2026: Gold rose more than 5 percent in four trading days, from $4,046 on 31 July to $4,272 on 6 August. Markets do not move like that on familiar news, and this move tracked a currency rescue rather than a geopolitical one, according to Nagham Hassan, Market Analyst at etoro.
The yen had fallen to around 164 per dollar, its weakest since 1986. On 30 July Japan’s finance ministry bought its own currency, an estimated 8.45 trillion yen, about $53 billion, in a single session. The next morning a Reuters photograph caught Treasury Secretary Scott Bessent’s notepad at Camp David reading “To Do, Buy Japanese Yen (JPY) $5-10 bil.” Washington then bought yen through the New York Fed, paying in euros. The dollar closed at 157.40 yen, down 2.88 percent.
The euro leg was deliberate. Japan holds $1,049.6 billion of long-term US Treasuries, more than any other country, and funding a long yen defence would have meant selling them. Selling on that scale pushes bond prices down and yields up, and those yields set American borrowing costs. The 10-year was already at 4.736 percent. Washington paid in euros so Tokyo would not have to sell bonds.
On 3 August, Finance Minister Satsuki Katayama confirmed the operation, said Japan would repeat it if needed, and said Tokyo will use the Fed’s FIMA facility, which lets it borrow dollars against its bonds rather than sell them. The cap is $60 billion per country per day and Bessent wants it raised.
For scale, the last joint operation came in 1998, during the Asian Financial Crisis, when a falling yen was adding to regional currency stress. It cost $2.6 billion and moved the dollar 10 yen in days. This one cost twenty times more and moved it about 6.6.
The rate gap remains: 3.50 to 3.75 percent in the US, 1.00 percent in Japan. Closing it means the trades built on cheap yen borrowing have to be unwound, which means selling US bonds into a market already carrying a 4.736 percent 10-year. Leaving it open means the yen keeps sliding and the response stays what it was in July, borrowing against bonds instead of correcting the rate that caused the problem. Gold gains either way, because when currencies and bonds are both unsettled, buyers go looking for a third option.
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