Yen Rally Tests Resistance at 158.02 as Intervention Caps Upside

The Japanese Yen has staged a relief rally, testing key resistance at the 200-day moving average near 158.02 in USD/JPY. According to Brown Brothers Harriman's Elias Haddad, this rally should be limited and offers an opportunity to sell the cross on strength.

Haddad argues that coordinated US-Japan FX intervention and official warnings impose a firmer ceiling on USD/JPY, raising the cost of resisting a stronger Japanese Yen. This intervention caps upside in USD/JPY, making it more expensive for investors to fight a stronger yen.

Japan's ability to fund FX intervention without disrupting the US Treasury market is another key factor. As Haddad explains, Japan has access to the Fed's Foreign and International Monetary Authorities Repo Facility (FIMA) to raise dollar liquidity against its long-term Treasury holdings ($1.05 trillion as of May). This means that even if Japan sells some USD against JPY, it would have a limited impact on Treasury yields.