The Japanese yen just hit 163.24 per dollar, a level not seen in over four decades. And the scariest part for global markets isn’t the number itself. It’s that Japan reportedly spent $73 billion trying to stop it and barely moved the needle.
How we got here
The yen’s slide didn’t happen overnight. It’s the product of a widening chasm between US and Japanese monetary policy that’s been building for years.
The yen breached 162 per dollar in late June 2026, which set off alarm bells in Tokyo. By mid-July, authorities reportedly stepped in with their massive intervention. The currency didn’t flinch.
This isn’t Japan’s first rodeo. In 2022, Tokyo spent over $60 billion defending the yen when it tumbled past 150 per dollar. That intervention worked, temporarily. The yen strengthened for a few months before resuming its decline. Another round of intervention followed in 2024, producing similarly fleeting results.
