US Deployed Symbolic $500 Million in Joint Yen Intervention, Macquarie Says

The United States' participation in the recent joint intervention to support the Japanese yen was primarily a symbolic gesture, with its financial contribution being a fraction of Japan's, according to an analysis by Macquarie. The "signal effect" of the coordinated action is far more influential for markets than the actual capital deployed by the U.S., the report stated.

A Tale of Two Interventions

Macquarie's head of FX and rates strategy, Gareth Berry, estimated in a recent report that U.S. authorities sold the equivalent of $500 million in the EUR/JPY currency pair on July 31. This amount, Berry noted, was a "drop in the ocean" compared to Japan's estimated sale of $85 billion in USD/JPY over the two-day period of July 30-31.

The operation marked Japan's largest two-day intervention on record, excluding the one following the Fukushima disaster in October 2011. The relatively small scale of the U.S. involvement suggests that Washington has preserved most of its capacity for future actions.

U.S. Retains Significant Firepower

According to the report, the U.S. Treasury and the Federal Reserve jointly have an additional $25.9 billion in euro-denominated reserves that could be used for similar EUR/JPY operations if the yen weakens again. Furthermore, Macquarie noted that if the U.S. were to intervene directly in the USD/JPY pair, its available resources would be "nearly unlimited."

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This retained capacity underscores the credibility of potential future coordinated efforts to stabilize the Japanese currency.

Market Braces for Next Move

The yen has since relinquished most of its gains from the late-July intervention, with the USD/JPY rate again approaching the 160 level, a threshold closely watched by traders as a potential trigger for another government response. Persistent pressure on the yen stems from the wide interest rate differential between the U.S. and Japan, as well as concerns over Japan's fiscal outlook.

In response to the intervention and ongoing yen weakness, speculative positioning has shifted. Data from the Commodity Futures Trading Commission (CFTC) for the week ending August 11 showed that leveraged funds had cut their net short yen positions by more than half since the coordinated action. Meanwhile, overnight index swaps indicate an approximately 80% probability of a Bank of Japan interest rate hike in September as policymakers weigh options to support the currency.