Hedge funds have significantly increased their short positions on the Japanese yen, reaching the largest level since mid-2024. As of December 14, 2025, net short contracts have surged to 85,000. This trend is driven by the widening interest rate differential between the U.S. and Japan, alongside Japan's negative real yields. The aggressive positioning indicates a strategic shift as yen assets continue to underperform due to weak returns and limited capital inflows.