Japanese investors, who collectively hold $1 trillion in US Treasury bonds, are increasingly eyeing domestic opportunities as inflationary pressures and rising yields on Japanese government bonds (JGBs) make repatriation more attractive. The Bank of Japan has hiked rates five times since 2024, pushing 10- and 30-year JGB yields to levels not seen since the 1990s. Prime Minister Sanae Takaichi's stimulus measures and the global oil shock—amplified by the US-Israeli war on Iran—are further fueling inflation, making domestic investments more appealing.
Meanwhile, the Federal Reserve’s anticipated rate cuts, now delayed until 2027, contrast sharply with Japan’s tightening monetary policy. This divergence has already prompted significant capital flows back into Japanese sovereign bond funds, with March recording the largest monthly inflow ever. Mark Dowding, chief investment officer at BlueBay, noted that ‘the new money being put to work won’t be going into US Treasuries’ but rather into domestic allocations.
The potential mass exodus from US Treasuries could force the Treasury Department to offer higher yields to attract buyers, exacerbating America’s already strained fiscal position. Recent auctions of two-, five-, and seven-year Treasury notes have seen weak demand, pushing yields higher. The Treasury sold $25 billion of 30-year bonds at a 5% yield in March—the highest since 2007—highlighting the market’s vulnerability.
Higher yields could further inflate America’s $1 trillion annual interest costs, worsening the budget deficit and compounding the national debt. As Japan’s institutional framework increasingly encourages repatriation, the US faces a critical juncture in managing its debt market stability amid global economic shifts.