CRCL · CIK 1876042
What Circle Internet Group, Inc. told the SEC could break it.
Almost everything Circle disclosed traces back to a single product, the USDC stablecoin, and the reserves behind it. Its revenue is overwhelmingly concentrated in one interest-rate-sensitive stream — reserve income made up 96% of total revenue and falls when rates decline — while roughly 88% of those reserves sit in a single BlackRock-managed, BNY-custodied fund. The rest of its register is regulatory: as a global stablecoin issuer it is exposed to OFAC sanctions and AML rules, EU MiCAR reserve requirements, and the still-settling US securities treatment of payment stablecoins under the GENIUS Act.
5 self-disclosed vulnerabilities, pulled from its own filings — each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Regulatory & policy
- OFAC sanctions & AML/BSA compliancemedium
As a global money-movement/stablecoin platform, Circle must comply with OFAC sanctions (Cuba, Iran, North Korea, Crimea/Donetsk/Luhansk) and AML/BSA regimes worldwide; noncompliance risks penalties (a prior Poloniex unit paid OFAC $7.6M in 2023).
“The OFAC regulations and requirements generally restrict dealings by persons subject to U.S. jurisdiction with certain countries, or subnational territories that are the target of comprehensive sanctions, which currently are Cuba, Iran, and North Korea, as well as Crimea, the so-called Donetsk People's Republic, and the so-called Luhansk People's Republic regions of Ukraine.”
- EU MiCAR e-money token reserve rulesmedium
Under EU MiCAR, issuers of significant e-money tokens must hold at least 60% of received funds as fiat deposits in EU bank accounts; if other governments adopt similar rules it could complicate Circle's operations and raise expenses.
“For instance, issuers of significant e-money tokens in the EU are required under MiCAR to hold at least 60% of the funds received in exchange for e-money tokens as fiat currency deposits in separate accounts at EU banks.”
SEC filing →As of 2026 - GENIUS Act / US payment-stablecoin securities treatmentmedium
Circle's core conclusion that USDC is not a 'security' depends on regulatory treatment; the GENIUS Act will exclude PPSI payment stablecoins (incl. USDC) from the securities definition, but until those amendments are effective Circle relies on its own legal conclusion.
“The GENIUS Act amends the U.S. federal securities laws to explicitly exclude from the definition of “security” payment stablecoins issued by PPSIs, which will include USDC.”
SEC filing →As of 2026
Other disclosures
- reserve-income / interest-rate revenue concentrationhigh
Circle earns ~96% of total revenue from reserve income on assets backing USDC/EURC, earned near prevailing SOFR — so revenue is overwhelmingly concentrated in one stream and falls when interest rates decline.
“Reserve income was 96.0% and 99.1% of our total revenue in the years ended December 31, 2025 and 2024, respectively.”
SEC filing →As of 2026
Supplier concentration
- USDC reserve concentration in the Circle Reserve Fund (manager/custodian)medium
~88% of USDC reserves sit in a single vehicle, the Circle Reserve Fund (BlackRock-managed, BNY-custodied), concentrating exposure to that fund's issuer, manager and custodian.
“As of December 31, 2025, we held approximately 88% of USDC reserves in the Circle Reserve Fund, which is managed by BlackRock and custodied at BNY, with the remaining portion of USDC reserves held as cash at various banks in accounts that are titled FBO holders of USDC, primarily GSIBs.”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings — including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
“participants in the USDC ecosystem earn an amount based on terms agreed between the approved participant, Circle, and the Company, and (iv) the Company receives 50% of the remaining Payment Base. The arrangement is not within the scope of ASC 606, Revenue from Contracts with Customers (“ASC 606”) as Circle is not a customer of the Company.”
Cited →
Its suppliers
The Bank of New York Mellon (BNY)
“As of December 31, 2025, we held approximately 88% of USDC reserves in the Circle Reserve Fund, which is managed by BlackRock and custodied at BNY, with the remaining portion of USDC reserves held as cash at various banks in accounts that are titled FBO holders of USDC, primarily GSIBs.”
Cited →“As of December 31, 2025, we held approximately 88% of USDC reserves in the Circle Reserve Fund, which is managed by BlackRock and custodied at BNY, with the remaining portion of USDC reserves held as cash at various banks in accounts that are titled FBO holders of USDC, primarily GSIBs.”
Cited →
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