Circle Internet Group, Inc.USDC is cited as holding ~$150B of US short-term government debt alongside USDT, illustrating growing stablecoin-driven demand for Circle's product and Treasuries.

Carolyn Wilkins, an external member of the Bank of England's Financial Policy Committee, said in a speech at Queen's University Belfast on September 15 that the rise of stablecoins could reinforce the global dominance of the US dollar and increase demand for US Treasuries. She noted that dollar-denominated stablecoins facilitate cross-border payments and broaden access to dollar assets outside the United States, saying dollar-denominated coins account for about 98% of the stablecoin market and that the dollar enjoys a substantial first-mover advantage. According to data she cited, Tether's USDT and Circle's USDC held about 150 billion dollars' worth of US short-term government debt as of the end of 2025, having added roughly 33 billion dollars' worth during that year. At the same time, she argued that this relationship is a double-edged sword, warning that once issuance becomes large enough, a wave of redemptions could force issuers to sell short-term government debt, potentially amplifying volatility in a market that is already under stress. In the UK, the Financial Conduct Authority published final rules for stablecoin issuers in June after trials in a regulatory sandbox, and the Bank of England has indicated it will allow systemic issuers to hold up to 70% of their backing assets in UK government debt with less than six months to maturity.
Circle Internet Group, Inc.USDC is cited as holding ~$150B of US short-term government debt alongside USDT, illustrating growing stablecoin-driven demand for Circle's product and Treasuries.
The speech warns that large-scale redemptions of stablecoins like USDT could force issuers to sell short-term government debt and amplify market volatility, a risk flagged for Tether.