When Silicon Valley Bank collapsed in March 2023, it exposed a hidden vulnerability in one of crypto's most trusted stablecoins. Circle, the issuer of USDC (the second-largest stablecoin by market value), had roughly 8 percent of its reserves locked in SVB when regulators seized the bank. The incident triggered a cascade of changes that fundamentally reshaped how USDC manages its $308 billion in backing assets, according to new research from Federal Reserve economists.

The findings reveal a critical shift in stablecoin risk management: rather than holding cash at traditional banks, Circle has increasingly moved USDC's reserves into repurchase agreements, or "repos," which are short-term lending contracts typically used by Wall Street. This pivot illustrates how deeply stablecoins are now intertwined with traditional financial markets, and how shocks from outside the crypto world can reshape the infrastructure that underpins digital dollars.

What Happened to USDC After SVB Failed?

In the immediate aftermath of SVB's failure, USDC's price dropped below its $1.00 peg for the first time, and the stablecoin experienced significant outflows as users rushed to withdraw their holdings. Circle responded by making dramatic changes to the Circle Reserve Fund (CRF), the money market mutual fund that holds approximately 86 percent of USDC's reserves.

The most striking change was the surge in repo holdings. Before SVB's collapse, the CRF held virtually no repos. Within weeks, repos jumped to over 90 percent of the fund's net assets. While that share has since retreated to 69 percent, it remains far above the typical levels held by traditional Treasury-only money market funds.

The CRF also shortened the average maturity of its holdings, meaning it now holds shorter-term assets that are less sensitive to interest rate changes. This reduced interest-rate risk but introduced a different concern: counterparty risk, or the danger that the entities on the other side of these repo agreements might default.

How Did Circle's Bank Deposits Change?

Beyond the CRF, Circle also restructured the roughly 14 percent of USDC reserves held directly at banks. Before SVB's failure, these deposits were spread across a mix of Global Systemically Important Banks (GSIBs), which are the largest, most heavily regulated financial institutions, and smaller regional banks like SVB and Signature Bank. After the collapse, Circle concentrated over 90 percent of its bank deposits at GSIBs, effectively betting that the largest banks are safer counterparties.

This shift reflects a broader lesson from the SVB episode: stablecoin issuers cannot treat all banks equally. The concentration of deposits at GSIBs suggests Circle is prioritizing regulatory oversight and institutional stability over diversification, a trade-off that may reduce the risk of another sudden loss but increases reliance on a smaller set of counterparties.

Why Does This Matter for Stablecoin Users and the Broader Market?

The SVB episode and Circle's response highlight a fundamental tension in stablecoin design. These digital assets are supposed to be stable and safe, backed by real-world assets. But the assets that back them are not immune to traditional financial shocks. When a bank fails, a money market fund faces a liquidity crisis, or interest rates spike, stablecoin reserves can be disrupted.

The shift toward repos introduces new complexities. Repos are typically very safe, but they concentrate risk among a smaller number of counterparties. In late 2024 and early 2025, the CRF's repo holdings became increasingly concentrated in FICC-sponsored repos, which are backed by entities like hedge funds that have a net demand for funding. This concentration grew to 77 percent by the end of 2025, raising questions about whether Circle has simply traded bank risk for hedge fund risk.

How to Understand Stablecoin Reserve Risk

• Bank Deposits: Direct cash held at banks carries counterparty risk, meaning the bank could fail or face regulatory action. Circle now concentrates these at the largest, most regulated institutions.
• Repurchase Agreements: Short-term lending contracts where Circle lends cash and receives securities as collateral. These reduce interest-rate risk but concentrate counterparty risk among repo dealers and their clients.
• Treasury Securities: Direct holdings of U.S. government bonds are extremely safe but expose reserves to interest-rate risk if rates rise and the bonds must be sold at a loss.
• Money Market Mutual Funds: The CRF is a specialized fund that holds a mix of these assets, allowing Circle to diversify while maintaining stability.

What Do the Numbers Tell Us About Stablecoin Market Dynamics?

Despite the SVB shock and subsequent restructuring, the stablecoin market has continued to grow. Since April 2025, the total market capitalization of U.S. dollar stablecoins increased by $71 billion, or 30 percent, reaching approximately $308 billion. However, recent data shows the market has lost $10 billion in the past month, marking the largest monthly decline since the Terra crash in May 2022.

The decline is not a sign of weakness in stablecoin adoption for payments. Instead, it reflects a shift in how investors use stablecoins. The passage of the GENIUS Act in July 2025, which banned stablecoin issuers from paying interest on payment tokens, prompted investors to move their capital into tokenized Treasury funds, which offer yields closer to Treasury bill rates. These funds have grown from $11 billion to $16 billion in just five months.

Meanwhile, stablecoin transaction volume has surged. Adjusted transaction volume hit a record $1.79 trillion in June 2026, up 63 percent month-over-month. USDC accounted for about 70 percent of transactions in the first half of 2026, with adjusted transfer volume of $1.21 trillion in June alone, compared to Tether's (USDT) $576 billion.

"The ban didn't eliminate demand for yield, it just moved it," explained David Krause, a finance professor at Marquette University, regarding the GENIUS Act's impact on stablecoin flows.

David Krause, Finance Professor at Marquette University

This divergence between falling market capitalization and rising transaction volume reveals a fundamental shift in stablecoin economics. Stablecoins are increasingly being used as payment rails rather than savings vehicles. According to Visa data, stablecoin velocity, or the speed at which coins change hands, reached 13.56 in the fourth quarter of 2025, nearly eight times the velocity of the U.S. M1 money supply.

What Does This Mean for Stablecoin Issuers and the Industry?

The SVB episode and subsequent market shifts have forced stablecoin issuers to rethink their business models. With interest income from reserves no longer available under the GENIUS Act, issuers like Circle and Tether must find new revenue streams. The focus is shifting to payment networks, processors, and blockchains that charge transaction fees.

The concentration of USDC's reserves at GSIBs and in repo agreements also signals a broader trend: stablecoins are becoming more integrated with traditional finance, not less. This integration brings stability and regulatory clarity, but it also means stablecoins are no longer insulated from traditional financial shocks. The next crisis in banking or money markets could ripple through the stablecoin ecosystem just as SVB's failure did.

The Federal Reserve researchers noted that the SVB event "triggered a change in the type of risk held by one of the largest stablecoin issuers, away from interest-rate risk and toward counterparty risk," highlighting the growing interconnectedness between traditional finance and emerging financial technologies.