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The Federal Reserve Bank of New York intervened in foreign exchange markets by purchasing Japanese yen on behalf of the U.S. Treasury, marking the first time Washington has bought the Japanese currency since June 17, 1998, according to historical records and financial reports. The rare coordinated currency defense pushed the USD/JPY exchange rate down from multi-decade lows, abruptly halting a slide that had triggered widespread financial market stress and divergent reactions across global asset classes, including a brief dip in Bitcoin.
U.S. Treasury and Federal Reserve Intervention Timeline
According to reports from the Financial Times and records from the Congressional Research Service, the New York Fed sold euros and bought yen on the open market, executing the instructions of the U.S. Treasury. This action followed unilateral intervention by Japanese authorities, who sold U.S. dollars and bought yen to support their domestic currency. Bloomberg reported that Japanese purchases reached an estimated 8,450 billion yen (approximately 52,8 milliards de dollars) through accounts managed by the Bank of Japan and broker forecasts.
The joint defense brought the yen off a historic trough of 163.99 per dollar—its weakest level in nearly 40 years—closing the week stronger at 157.40 per dollar. The last time the U.S. government directly purchased yen was on June 17, 1998, when the New York Fed deployed $833 million split between Federal Reserve funds and the Treasury’s Exchange Stabilization Fund. Subsequent U.S. interventions in 2000 and 2011 involved different objectives, such as G7-coordinated sales of yen to curb its strength.
Impact on Global Equities and Bitcoin Markets
While major Wall Street indexes finished the session higher—with the Nasdaq rising 1%, the S&P 500 gaining 0.7%, and the Dow Jones adding 0.53%, according to CNBC—cryptocurrency markets reacted in the opposite direction. Bitcoin briefly fell below 63 000 dollars, trading around $63,034 with a 1,25 % loss over a 24-hour period.
Market analysts attribute the divergence to the unwinding of the yen carry trade. For years, investors borrowed low-yield Japanese yen to fund purchases of higher-yielding risk assets, including technology stocks and Bitcoin. When central bank interventions or interest rate shifts cause a sudden surge in the value of the yen, leveraged traders are forced to liquidate risk assets rapidly to cover their loan repayments.
Future Outlook and Monetary Policy Trajectories
The Bank of Japan maintained its benchmark interest rate at 1% by an 8-1 vote, marking its highest level since 1995, though still far below U.S. borrowing benchmarks. According to a note from Evercore ISI strategists Marco Casiraghi and Gang Lyu cited by Bloomberg, currency interventions risk having a short-lived impact unless supported by a narrowing interest rate differential between the United States and Japan.
Market participants are monitoring several upcoming milestones, including the official release of intervention data by the Japanese Ministry of Finance, upcoming G20 financial meetings in Asheville, North Carolina, and the future rate decisions of both the Federal Reserve and the Bank of Japan. Traders continue to treat the 160 threshold as a key technical level for the USD/JPY pair to determine if the currency defense has stabilized the exchange rate.
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