Circle reported on August 5 that USDC processed $14.8 trillion of onchain transaction volume in the second quarter of 2026, up 151% from a year earlier. Quarter-end USDC circulation reached $73.3 billion, 19% higher year over year, while total revenue and reserve income rose 7% to $701 million. The figures create an unusual gap: activity using the stablecoin is growing far faster than the stock of USDC outstanding or the revenue generated by its issuer.
The comparison needs one qualification. Q2 was not a new sequential transaction-volume record. Circle reported $21.5 trillion of USDC onchain volume in Q1 and $77.0 billion in circulation at March 31. Both measures were lower at the end of, or during, Q2. The stronger signal is year-over-year: USDC is supporting substantially more blockchain activity without requiring proportional growth in circulating supply or issuer revenue.
More Transactions Do Not Require More Dollars in Circulation
A stablecoin can be used repeatedly across exchanges, payment applications, smart contracts, treasury workflows and settlement processes. Transaction activity is therefore different from circulating supply, which measures USDC outstanding at a point in time.
Circle’s Q2 results therefore point to increasing network utilization rather than a simple expansion of the monetary base. But calling the $14.8 trillion figure payment volume would go too far. Circle defines USDC onchain transaction volume as native and canonically bridged USDC settled or processed across supported blockchains, with Solana excluded from the metric. The total can include trading, decentralized-finance and smart-contract activity, not only purchases or cross-border payments.
A June 2026 BIS study of stablecoin transactions makes the distinction important: individual token transfers can sit inside larger transactions that bundle several operations. High onchain turnover can signal infrastructure use, but it is not a direct measure of real-economy payment demand.
Reserve Economics Are Moving More Slowly
Circle’s revenue model still depends heavily on the assets backing USDC. In its 2025 annual report, the company said reserve income represented 96% of total revenue from continuing operations for that year. Reserve income is driven mainly by two variables: the average amount of stablecoins in circulation and the return earned on reserve assets.
Q2 shows those variables pulling in opposite directions. Average USDC circulation increased 25% year over year, but Circle’s reserve return rate declined by 66 basis points. As a result, reserve income rose only 5% to $668 million. Total revenue and reserve income increased 7%. The Federal Reserve’s July decision kept the federal funds target range at 3.5% to 3.75%, below the rate environment that had previously supported higher reserve yields.
This exposes a structural feature of the issuer model. More transactions do not automatically create more reserve income. The same stock of USDC can generate more network activity without creating additional reserve assets. If rates decline, utility can rise while reserve economics weaken.
The Business Model Has to Capture Utility Somewhere
Greater usage can still support demand for USDC balances and deepen distribution across payments, treasury, trading and settlement. Over time, those network effects may help circulation grow, but the link is indirect.
Circle is also building revenue sources outside reserve income. Other revenue reached $34 million in Q2, up 41% year over year, driven by subscription and services growth. Circle Payments Network reached $14.7 billion in annualized transaction volume based on trailing 30-day activity at quarter end, up 76% from Q1, with 175 financial institutions enrolled.
Those figures remain small beside $668 million of quarterly reserve income, but they show the direction of travel. If stablecoins become financial plumbing, issuers can monetize services around the token, including payments orchestration, liquidity tools and interoperability. The model then looks more like a platform built around digital money.
Falling Rates Make Diversification More Than a Growth Story
Circle’s 2025 Form 10-K says reserve returns historically track rates close to SOFR and identifies interest-rate fluctuations as material to operating results. Lower rates can therefore compress income per dollar of reserves even if adoption continues.
A token can become more important to payment and settlement workflows without its issuer capturing revenue from each additional transfer. For the issuer, that raises a basic question: how much revenue should come from reserves, and how much from services built around circulation?
The issue is broader than Circle. The BIS has highlighted the tension between stablecoin backing designed for par convertibility and the economics available to issuers from reserve assets. As regulation increasingly emphasizes high-quality, liquid reserves, there may be less room to improve economics by taking additional balance-sheet risk.
Velocity Is Useful, but Easy to Misread
The gap between $14.8 trillion of quarterly activity and $73.3 billion of quarter-end circulation should not be treated as conventional monetary velocity. The numerator includes many forms of onchain activity and the denominator is a point-in-time supply measure. Still, the underlying idea matters: stablecoin payment infrastructure can become more useful when a given stock of digital money supports more activity without equivalent growth in prefunded balances.
The Kenson Perspective
For Kenson Investments, the Q2 figures are useful because they separate three measurements that are often treated as interchangeable: adoption, circulation and issuer economics. Onchain volume measures activity, circulating supply determines the reserve base, and reserve yield influences how much income that base can generate. They can move in very different directions.
Our stablecoin education resources and digital asset risk management coverage focus on these distinctions because institutional adoption is ultimately about how digital money behaves inside operating systems, not simply how large its market capitalization becomes.
Watch What Stablecoins Monetize Next
USDC’s Q2 numbers do not show that reserve income is disappearing. They show why transaction growth alone cannot answer how a stablecoin business will evolve. If network activity keeps outpacing circulation while reserve yields face pressure, services surrounding the token become more important to watch. Explore Kenson Investments’ stablecoin research or contact us to continue following the infrastructure and operating models developing around digital money.
Disclaimer: The information provided on this page is for educational and informational purposes only and should not be construed as financial advice. Crypto currency assets involve inherent risks, and past performance is not indicative of future results. Always conduct thorough research and consult with a qualified financial advisor before making investment decisions.
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