Fed Analysis Maps How SVB Collapse Forced Circle to Overhaul USDC Reserves

Researchers from the Federal Reserve Banks of New York and Boston have published a post-mortem examining how Circle restructured the reserve assets backing USDC after Silicon Valley Bank failed in March 2023. Circle had $3.3 billion deposited at SVB at the time, a concentration that triggered a de-peg of the stablecoin and exposed the fragility of its then-prevailing reserve strategy.

The Federal Reserve analysis identifies four distinct shifts in how Circle now holds reserves. The weighted average maturity of the Circle Reserve Fund dropped sharply, falling from above the median for money market funds to among the shortest of any Treasury-only money market fund, reducing interest rate risk in the process. Reverse repurchase agreements, which had been absent from the portfolio, surged to over 90% of net assets before stabilising at 69%. Within that repo book, centrally cleared sponsored repos grew to represent 77% of holdings by the fourth quarter of 2025.

Bank deposits moved in two directions simultaneously: the counterparty mix shifted toward global systemically important banks (GSIBs), while cash as a share of total reserves contracted from a pre-SVB range of 20% to 25% down to between 12% and 15% since 2024. Taken together, the changes suggest Circle traded yield and flexibility for shorter duration, higher-quality collateral, and more systemically protected counterparties. For stablecoin operators and their institutional partners, the Fed’s willingness to publish this level of reserve granularity signals that reserve composition will remain a live regulatory focus.