Stablecoins' $200 Billion Surge Challenges China's US Debt Dominance

Tom Lee, a well-known cryptocurrency analyst, believes that stablecoins are becoming integral to the financial system's function and liquidity. In a recent post on X, Lee cited a Federal Reserve Bank of San Francisco report that showed stablecoin issuers increased their U.S. Treasury holdings by $200 billion over five years, partially offsetting a decline in Chinese demand.

The report, titled Economic Letter 2026-26, details how stablecoin issuers are becoming a new source of demand for U.S. government debt. To maintain a one-to-one parity with the U.S. dollar, major stablecoin issuers must hold highly liquid assets, primarily short-term Treasury securities.

The two largest stablecoins, Tether (USDT) and USD Coin (USDC), make up more than 80% of the market capitalization and have grown their Treasury holdings more than tenfold over the past five years.

The San Francisco Fed notes that the share of U.S. debt held by foreign entities has fallen steadily from a peak of over 50% around 2008 to roughly 30% in early 2026. This drop is largely attributed to the Chinese government diversifying its asset portfolio away from U.S. debt.