Stablecoins have rapidly become a crucial fixture in the U.S. government debt landscape, with major issuers now surpassing entire sovereign nations in their holdings of Treasury securities. Tether and Circle, two of the sector’s leading players, collectively hold over $160 billion in U.S. Treasuries—a striking development for companies that emerged only within the past decade. This shift reflects not only growing crypto market influence but also profound changes to global financial flows in the wake of regulatory and macroeconomic shifts.
The GENIUS Act and the Mandate to Hold Treasuries
The GENIUS Act, which was enacted last year, introduced sweeping requirements for stablecoin reserves management. Under this law, stablecoin tokens must be backed one-for-one with assets such as U.S. dollars, Treasury bills, or similarly short-term instruments. In effect, Congress has not only regulated the stablecoin sector but also mandated substantial, ongoing purchases of U.S. government debt from participants in this industry.
Tether currently holds $141 billion in U.S. Treasury exposure, positioning it as the 17th largest government debt holder worldwide. Of this amount, $122 billion is directly allocated to T-bills, while the remainder is placed in overnight reverse repurchase agreements. Circle’s USDC stablecoin adds another $24.5 billion to the tally, with roughly 93% of its reserves contained in short-term government assets and repos.
Tether, founded in 2014, is regarded as the world’s largest stablecoin issuer and is primarily known for its USDT token, which aims to maintain a 1:1 peg with the U.S. dollar. Circle, established in 2013, issues the USDC stablecoin and maintains a significant presence in global digital payments infrastructure.
Shift in Global Treasury Demand and Stablecoin Growth
Traditional foreign holders of U.S. Treasuries have scaled back their positions in recent years. China, for example, offloaded $86 billion in Treasury assets in the past twelve months, pushing its holdings to the lowest levels seen since 2008. Japan, the largest overseas holder at $1.2 trillion, has signaled its own reduction strategy as well.
As such, stablecoins increasingly fulfill a demand gap left by these major states. Every USDT or USDC issued represents a direct increase in U.S. Treasury buying pressure, due to legally mandated reserve requirements. In parallel, the worldwide circulation of dollar-denominated stablecoins enhances U.S. dollar distribution through digital channels, extending influence without traditional foreign policy tools.
Financial services firm Apollo projects that the stablecoin sector could expand to $2 trillion by 2028. On this trajectory, stablecoin issuers would surpass Japan’s current level of U.S. Treasury holdings, potentially reshaping the list of the world’s most significant government debt holders.
Tether has also reported $10 billion in profit over the first three quarters of 2025, exceeding Bank of America’s earnings for that period, and nearly reaching those posted by Goldman Sachs and Morgan Stanley. This was achieved with a reported staff headcount of about 300 people.
Commentary on social platforms has noted that the GENIUS Act has effectively transformed stablecoin companies into a new class of reliable Treasury buyers. As summarized in one analysis,
Tether and Circle now hold more U.S. Treasuries than South Korea, Germany, and Saudi Arabia combined. Both issuers have become steady, large-scale participants in American government debt markets—a scenario that was almost unimaginable just a decade ago.
As stablecoin adoption accelerates, every token minted directly feeds demand for U.S. sovereign debt. This trend is now structurally embedded in both financial markets and federal legislation, marking a significant integration of digital assets into core global economic processes.
