Key Takeaways
- Large-scale Tether issuance causes short-term U.S. Treasury prices to rise.
- With over 80% of Tether’s reserves in U.S. Treasuries, each new issuance leads to real-time Treasury purchases.
- As stablecoins become systemic holders of sovereign debt, their potential to destabilize markets grows.
In recent years, the rise of stablecoins—cryptocurrencies pegged to traditional assets—has quietly begun to reshape global finance.
Among them, Tether’s growing footprint is increasingly intertwined with some of the world’s safest investments.
This emerging connection signals a profound shift, with ripple effects that could redefine liquidity, risk, and monetary policy in the years ahead.
Stablecoin Demand Now Moves Treasury Prices
The expansion of reserve-backed stablecoins—especially Tether—is already shifting the gears of global finance.
New empirical research from Sang Rae Kim at Kyung Hee University shows that the large-scale issuance of Tether, the world’s dominant stablecoin, is having measurable effects on U.S. Treasury markets.
Using high-frequency data from the Ethereum blockchain, researchers observed that major Tether issuance events result in statistically significant, albeit temporary, increases in short-term Treasuries.
Specifically, prices of the BIL ETF—a real-time proxy for Treasury demand—rise by approximately 1.5 basis points within the hour after significant Tether minting events.
Although small, this impact is consistent and shows no pre-event trends, supporting the view that exogenous demand shocks from stablecoin issuers drive these movements.
Daily data reinforce these findings. The BIL ETF price increases by about 2.7 basis points the day after significant Tether issuance, gradually reverting to baseline over the next two days.
These movements suggest that reserve-backed stablecoins like Tether are emerging as new players in the safe asset ecosystem, buying Treasuries immediately after minting to back their liabilities.
Over 80% of Tether’s reserves are held in U.S. Treasuries and similar assets, according to its 2025 disclosures. As Tether grows, its demand for Treasuries rises, linking crypto and traditional finance more closely than ever.
A Nonlinear Transmission Mechanism with Systemic Implications
While the current price effects of stablecoin issuance on Treasury markets are relatively modest, they may scale dramatically.
A macro-financial model developed alongside the empirical findings demonstrates that the transmission mechanism between stablecoin growth and financial markets is nonlinear.
The model shows that as stablecoins like Tether account for a growing share of liquidity provision in the economy, their demand for Treasuries increases substantially.
This intensifies price pressures in safe asset markets, with far-reaching consequences. Initially, these effects are contained.
However, once the stablecoin sector passes a critical threshold, further expansion has disproportionately large impacts on Treasury prices and bank credit supply.
This behavior arises from how financial institutions react to rising Treasury prices. Higher bond prices boost the collateral value of bank holdings, loosening capital constraints and encouraging more risk-taking.
At the same time, lower yields on Treasuries push banks to shift portfolios toward higher-yield assets like loans. This strains their regulatory buffers. The balance between these forces determines how much credit flows to the real economy.
Policy Considerations: Managing a Structural Shift
The model shows that the stablecoin sector may soon become a macroeconomic driver.
In simulated scenarios, when stablecoins provide just 4–5% more of the economy’s liquidity, the demand surge significantly raises Treasury prices and expands bank lending.
This means that even seemingly minor growth in stablecoin use could have oversized effects on financial conditions.
Here’s a concise version of those lines:
The findings have key implications for policymakers. As stablecoins act like monetary instruments, their preference for short-term Treasuries could reshape sovereign debt markets.
One proposed response, similar to the GENIUS Act, is increasing Treasury issuance to accommodate stablecoin growth, easing price pressures.
Yet, even with more supply, the system remains vulnerable to crypto shocks.
In worst cases, a loss of confidence in a major stablecoin could spark Treasury sell-offs, tightening financial conditions and threatening stability.
Giuseppe Ciccomascolo began his career as an investigative journalist in Italy, where he contributed to both local and national newspapers, focusing on various financial sectors.
Upon relocating to London, he worked as an analyst for Fitch's CapitalStructure and later as a Senior Reporter for Alliance News. In 2017, Giuseppe transitioned to covering cryptocurrency-related news, producing documentaries and articles on Bitcoin and other emerging digital currencies. He also played a pivotal role in establishing the academy for a cryptocurrency exchange website. Crypto remained his primary area of interest throughout his tenure as a writer for ThirdFloor.
