Bitcoin drops below $63,000 after US yen intervention breaks 28-year precedent

America bought yen for the first time in 28 years, and Bitcoin felt the shock first as it broke below $63,000.

Bitcoin fell 1.25 percent to $63,034 on Friday after the US Treasury bought Japanese yen for the first time in 28 years, triggering carry-trade unwinding. The yen closed at 157.40 per dollar, its strongest since early May, after Washington joined Tokyo in a coordinated currency intervention.

"Without backing from rate differentials, the impact of FX interventions is likely to be relatively short-lived," Marco Casiraghi and Gang Lyu, strategists at Evercore ISI, said in a Friday note cited by Bloomberg.

Japan spent ¥8.45 trillion, about $52.8 billion, on Thursday, according to Bloomberg estimates from Bank of Japan accounts. The US Treasury's share was $5-10 billion, per Treasury Secretary Scott Bessent's notepad photographed at Camp David. The New York Fed executed the trade through Goldman Sachs and Morgan Stanley, the Financial Times reported. The last US yen purchase was June 17, 1998, when the New York Fed spent $833 million — half from the Fed, half from the Exchange Stabilization Fund.

The Bank of Japan held rates at 1 percent on an 8-1 vote this week, the highest since 1995 but still far below the US ceiling of 3.75 percent. The key test is 160 yen per dollar. If the dollar climbs back above that level, Tokyo and Washington face the same call again — with a larger bill.

The Carry Trade Chain

The yen slid to 163.99 per dollar last week, near a 40-year low. Traders borrowed yen at near-zero rates, swapped it for dollars, and bought riskier assets: stocks, bonds, and Bitcoin. That is the carry trade. It works while the yen stays weak. A sharp yen rally breaks it, forcing traders to sell what they own to repay loans.

Wall Street had a good Friday. The Nasdaq rose 1 percent, the S&P 500 added 0.7 percent, and the Dow gained 0.53 percent. Bitcoin went the other way. Stock traders were watching tech earnings; crypto traders were watching Tokyo.

Markets have been here before. The Bank of Japan raised rates on July 31, 2024, and the yen jumped. Within days the Nikkei 225 fell 12.4 percent, its worst day since 1987. Crypto fell with it. One thing is different now: that episode started with a rate hike, which closes the rate gap for good. Friday was a purchase, and purchases wear off.

South Korea also sold dollars alongside Japan on Thursday, a Reuters timeline shows. Weeks earlier, Goldman Sachs had forecast further yen weakness toward 165.

What to Watch

Three dates matter now. Japan's finance ministry publishes intervention data covering July 30 at the end of August. The BOJ's next meeting will test whether Governor Kazuo Ueda follows through on his tightening bias. And the Treasury's next currency report will show whether Japan stays on the watchlist — eight days after Washington was buying yen itself.

The Treasury published its currency report on July 23, keeping Japan on a watchlist for currency practices. Eight days later, Washington was buying yen. The simple test is 160. If the dollar stays below 160 yen, the defence held. If it climbs back, the intervention bill will be larger next time.

This article is for informational purposes only and does not constitute investment advice.