Community Trust ScoreVerified
Foreign investors are pulling back from T-bills. In June, they sold $29 billion in short-term U.S. Treasury bills—a move that wasn’t an isolated incident. The previous month, May, saw $43.5 billion in sales. Over two months, that’s $72.5 billion in liquidations. Washington is watching closely.
Here’s the curious part: those same foreign investors injected $181.4 billion into U.S. stocks in June. Net foreign capital flows into the U.S. that month totaled $133.5 billion. So, the appetite for U.S. assets isn’t dead—it’s just shifted. Stocks, yes. Short-term debt, much less so. Long-term T-bills? Just $6.8 billion in June. That’s slim. And that’s where stablecoins enter the conversation, likely faster than many anticipated.
No immediate panic. But the signal is clear.
Tether and Circle: Massive T-Bill Reserves
Tether directly held $114.96 billion in Treasury bills at the end of the second quarter. Additionally, $25.62 billion in short-term repo operations. That’s huge. Circle, on the other hand, manages its reserves through BlackRock’s Circle Reserve Fund—a fund that also includes short-term Treasury securities. These two players alone represent a structural and almost automatic demand for short-term U.S. debt.
The mechanism is simple to understand: when someone buys USDT or USDC, the issuer takes that money and invests it in T-bills. The end user doesn’t buy Treasury bills themselves—they probably have no idea—but their digital dollar still finances U.S. debt behind the scenes. It’s indirect, but it works.
And it’s growing. Tether reports 184.6 billion USDT in circulation at the end of the second quarter. Increase from the previous quarter? Just 446 million. Modest. Clearly insufficient to absorb the $29 billion sold by foreigners in June. The global stablecoin market was valued at about $302 billion as of August 21—a significant sum, but not all of it translates into T-bill demand, as not all reserves are in Treasury bills.
So for now, stablecoins aren’t filling the gap. Not yet.
The GENIUS Act Could Change the Game
This is where regulation gets interesting. The GENIUS Act requires stablecoin issuers to maintain liquid reserves. In practice, this mechanically pushes more funds toward Treasury bills. The U.S. Treasury continues to implement rules that strengthen the applicability of this law—rules aimed directly at integrating stablecoins into the traditional financial system.
If the supply of stablecoins increases significantly—and underlying trends in crypto adoption, especially in Asia and emerging markets, are moving in that direction—the resulting structural demand for T-bills could become a real macro factor. Not anecdotal. Real.
It remains conditional. The supply of stablecoins must grow rapidly. Regulation must hold. And issuers must actually maintain their reserves in T-bills rather than other assets. Three conditions. Not guaranteed.
But Washington’s argument is there: if foreigners reduce their exposure to short-term U.S. debt, stablecoins—regulated, backed by T-bills—could partially take over. A buyer of last resort, digital, decentralized in distribution but centralized in reserves.
For now, the numbers aren’t there yet. 302 billion stablecoins in circulation as of August 21, an increase of only 446 million for Tether over an entire quarter—the potential is there, execution takes time. And 72.5 billion in T-bills sold in two months by foreigners is a pace that current stablecoins cannot absorb alone.
Frequently Asked Questions
How much in Treasury bills does Tether hold in reserve?
At the end of the second quarter, Tether directly held $114.96 billion in U.S. Treasury bills, plus $25.62 billion in short-term repo operations.
What is the total size of the stablecoin market as of August 21?
The global stablecoin market was valued at about $302 billion as of August 21, according to the data cited in the source.
What does the GENIUS Act require of stablecoin issuers?
The GENIUS Act requires stablecoin issuers to maintain liquid reserves, which mechanically pushes some of these funds toward U.S. Treasury bills.
Why It Matters
This shift in foreign investment behavior raises important questions about the perceived safety and attractiveness of U.S. Treasury bills compared to equities. With significant capital flowing into U.S. stocks despite the pullback from T-bills, it suggests that investors may be seeking higher returns in a volatile market, reflecting broader trends in risk appetite and market sentiment. Additionally, this dynamic could influence future monetary policy and interest rate decisions as Washington assesses the implications of these investment trends.
