Four Days After We Called the Yen Cheap, It Hit ¥153: A 99%-Priced BOJ Hike, Bessent's “I Am the House,” and How to Reprice a Japan Plan Built at ¥160
On September 4 we published an article arguing that a yen near ¥157 made Japanese setup costs historically cheap for dollar- and euro-funded companies. Four trading days later, on the morning of September 8, the yen touched ¥153.3 to the dollar — its strongest level since mid-February and about 7% stronger than the four-decade low near ¥164 it hit in July. That same week, US Treasury Secretary Scott Bessent told an audience in Texas “I am the house now,” saying that when Washington intervenes on the yen he has good insight into what the Bank of Japan will do. Rate futures price a hike from 1.0% to 1.25% at the BOJ's September 17–18 meeting at roughly 99%, and a Reuters poll sees 1.75% by mid-2027. Real wages have risen for seven straight months, producer prices are up 7.6%, and METI has requested a record ¥7.79 trillion for fiscal 2027, with ¥1.4 trillion aimed at AI, semiconductors and robotics. None of this means the yen will keep rising — it slipped back to about ¥154 by September 11. It means the cheap end of the range now has a named defender, while the expensive end is open. Here is how to reprice a Japan plan built at ¥160, why the stronger yen is quietly good news for anyone selling into Japan, and why the window that matters now is not the currency window but Japan's budget season.