SeongJoon Cho | Bloomberg via Getty ImagesInvestors have been monitoring for potential intervention in the Japanese yen, but recent comments have triggered discussion about "coordinated intervention" with South Korea.
The currency has struggled, slipping past 150, since the Bank of Japan raised rates in March.
Following that volatility, the U.S. last week acknowledged Japan and South Korea's "serious concerns" over the recent sharp depreciation in their currencies.
The comments spurred chatter about possible coordinated currency intervention.
Brady said South Korea and Japan could amplify their individual messages to the market by coordinating policy, which might also enhance the short-term impact compared to unilateral action.
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