Strengthening Yen Threatens US Stock Market Through Carried-Interest Unwind
The US stock market is facing a potential threat from a strengthening Japanese yen. The USD/JPY uptrend channel, which had held since April 2025, has failed to hold. This could negatively impact the US stock market primarily through financial mechanisms and global capital flows.
The most significant threat a stronger yen poses to Wall Street is the disruption of the Yen Carry Trade. For years, Japan maintained near-zero or negative interest rates, keeping the yen weak. Global hedge funds and institutional investors borrowed billions in cheap yen, converted it to US dollars, and bought higher-yielding US assets, especially Mega-cap Tech stocks ($NVDA, $AAPL, $MSFT) and US Treasuries.
When the yen strengthens (often triggered by Bank of Japan rate hikes), these borrowed yen loans become much more expensive to pay back in dollar terms. To cut their currency losses and cover their loans, investors are forced to panic-sell US stocks and bonds to buy back yen. This triggers sudden, forced liquidations across US markets regardless of how healthy American corporate earnings actually are.
The strengthening yen also implies a weakening USD/JPY exchange rate. For US multinational corporations (e.g., Apple, McDonald's, Nike) that generate significant revenue in Japan, converting yen revenue back into US dollars yields fewer dollars, weighing on reported quarterly earnings and revenue growth.