Foreign appetite for US government debt cooled markedly in June, as the three largest overseas holders of Treasuries all reduced their positions at the same time.

Japan, the United Kingdom, and China trimmed a combined $61 billion from their Treasury portfolios during the month, pulling total foreign holdings down to $9.299 trillion from $9.371 trillion in May, according to Treasury International Capital (TIC) data released August 17.

The report also showed a sharp slowdown in demand for new paper. Net Treasury inflows collapsed from $56.6 billion in May to just $6.8 billion in June, an 88% decline that is difficult to attribute to routine portfolio rebalancing.

The big three step back

Japan remains the world's largest foreign holder of US Treasuries, but its appetite is fading. Tokyo held $1.116 trillion in June, down from $1.143 trillion in May, a 2.3% monthly decline. For context, Japan's holdings peaked at $1.325 trillion in November 2021, meaning the country has shed roughly $209 billion in Treasuries over the past four and a half years.

The United Kingdom, the second-largest holder, cut its position by about 1%, to $939.9 billion from $948.6 billion. UK Treasury holdings are widely viewed as a proxy for global hedge fund flows, as many offshore funds custody their assets through London.

China's figures tell the most striking story. Beijing reduced its holdings by 4% in a single month, from $659.3 billion in May to $633.4 billion in June. That marks the lowest level of Chinese Treasury holdings since September 2008, the month Lehman Brothers collapsed. On a year-over-year basis, China's stake is down more than 13%. The June reading leaves China's position at roughly half its reported 2013 peak of about $1.32 trillion, a span over which the country's central bank has also disclosed extended streaks of gold reserve accumulation in its monthly data.

Together, Japan, the UK, and China account for more than 31% of total US publicly held debt held by foreign entities. Foreign investors as a group hold roughly a third of US government debt held by the public, which is why the monthly TIC figures are tracked as a broad gauge of how the world's largest sovereign borrower is financed.

What the inflow drop signals

The plunge in net inflows is particularly notable. A fall from $56.6 billion to $6.8 billion in a single month does not necessarily mean foreigners are dumping Treasuries en masse; it indicates they are buying far less new paper while allowing some existing holdings to mature without reinvesting.

Total foreign holdings remain up 2.3% on a year-over-year basis, meaning the broader trend has not fully reversed. Still, the concentration risk is real: when the top holders, representing nearly a third of the foreign base, all move in the same direction in the same month, the 2.3% annual growth figure offers little comfort.

The softening comes against a backdrop of continued heavy issuance, as the US Treasury finances large federal budget deficits, while the Federal Reserve has been shrinking its own Treasury holdings under the quantitative tightening program it began in 2022. With the Fed's portfolio rolling off and the top foreign holders pulling back, more of the supply at each new auction falls to domestic private buyers such as money market funds, households, and leveraged funds.

Because TIC data arrives with roughly a two-month lag, market participants watch more timely proxies between releases, including the share of Treasury auctions awarded to indirect bidders, a category that captures foreign and international official institutions, and Japan's weekly portfolio-flow reports published by its Ministry of Finance.

The TIC data captures holdings primarily through US custodians and broker-dealers, which means it does not always reflect the full picture of beneficial ownership.