Key Moments
- Institutional investors bought US Dollars and sold Japanese Yen following the June BoJ rate hike.
- Real-money accounts again moved into USD and out of JPY after late-July joint FX intervention targeting USD/JPY.
- BNY’s Wee Khoon Chong raises doubts about the lasting effectiveness of FX interventions as USD/JPY trades lower while long-end JGB yields remain elevated.
Market Reaction to BoJ Hike and Policy Signals
BNY’s Wee Khoon Chong reports that institutional investors increased exposure to the US Dollar and reduced Japanese Yen holdings after the Bank of Japan’s June rate hike. This shift occurred in the context of how markets interpreted the policy stance of the new Federal Reserve leadership.
Chong notes that flows were driven by a hawkish reading of the first Federal Open Market Committee meeting under Fed Chair Kevin Warsh, which influenced investors to favor USD over JPY, even in the wake of a widely anticipated move by the BoJ.
Response to Late-July Joint FX Intervention
Attention then turned to the coordinated foreign exchange intervention at the end of July, when authorities in the U.S. and Japan sought to push USD/JPY lower. The joint effort was aimed at weakening the USD/JPY cross, but Chong highlights that real-money investors treated the episode differently than policymakers might have intended.
According to Chong, rather than turning away from the Dollar, institutional investors again stepped in to buy USD and sell yen, suggesting that they may have viewed the official action as an opportunity to add to USD/JPY positions.
Questioning the Staying Power of Intervention
Chong observes that the yen has weakened since July 31, despite the joint intervention. Combined with the documented behavior of institutional investors both after the June BoJ decision and the late-July operation, this pattern raises questions for him about how sustainable such FX interventions can be.
He points in particular to the backdrop of USD/JPY trading lower while yields on longer-dated Japanese government bonds remain elevated, a configuration that, in his view, casts further doubt on the long-term effectiveness of official currency support measures.
Timeline of Key Events and Investor Flows
| Event | Timing | Investor Behavior |
|---|---|---|
| BoJ rate hike | June 17 | Institutional investors bought USD and sold JPY |
| Joint FX intervention by U.S. and Japan | End of July | Real-money accounts bought USD and sold JPY |
| Post-intervention market backdrop | Since July 31 | Yen weakened, USD/JPY traded lower with long-end JGB yields elevated |
Unchanged Quotes
“On June 17, despite a widely anticipated BoJ rate hike, institutional investors poured into USD and sold JPY due to the hawkish interpretation of new Fed Chair Kevin Warsh’s first meeting at the helm of the FOMC.”
“Fast forward to the end of July, when joint intervention between the U.S. and Japan was aimed at weakening the USD/JPY cross.”
“Despite the move, real money bought USD and sold yen, perhaps indicating the perception of a USD/JPY buying opportunity.”
“With the yen having weakened since July 31, and observing the behavior of institutional investors, that begs the question of whether these interventions have any durable efficacy.”
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