The Lombard Review
World

Japan steps in to save the yen

Suspected intervention after data

A Bank of Japan convertible yen banknote from 1900
A Bank of Japan convertible yen banknote from 1900Photo: PHGCOM / Wikimedia Commons, CC BY-SA 3.0

Tokyo’s currency authorities executed another aggressive foreign exchange intervention on 11 July, stepping in immediately following the release of softer-than-expected US consumer price inflation. Taking advantage of dollar weakness, the Ministry of Finance deployed billions in reserves, driving the yen from a thirty-eight-year low of 161.9 back toward 157 per dollar.

A $100,000 gold certificate, the largest U.S. note ever printed
A $100,000 gold certificate, the largest U.S. note ever printedPhoto: BrayLockBoy / Wikimedia Commons, Public domain

The Counter-Cyclical Squeeze

By timing intervention to coincide with a macro data surprise, Japanese authorities maximized the pain inflicted on levered short-yen momentum traders. Yet tactical intervention cannot cure a structural ailment. So long as the Bank of Japan maintains near-zero borrowing costs while global yields sit comfortably higher, Tokyo is merely leasing temporary relief at immense reserve cost.

A supermarket aisle in New Orleans
A supermarket aisle in New OrleansPhoto: Infrogmation of New Orleans / Wikimedia Commons, CC BY-SA 4.0

Tokyo’s tactical yen intervention inflicted sharp losses on speculators, but burning foreign reserves cannot substitute for authentic domestic monetary tightening.