Circle Called ‘Most Important’ Stablecoin Player by Investment Firm William Blair

Circle (CRCL) is the most important player in the stablecoin ecosystem, according to investment bank William Blair, which initiated coverage on the company with an “Outperform” rating and a long-term bullish thesis.

The firm sees Circle as a central force in the transition from fiat to blockchain-based payments, particularly in cross-border B2B transactions, a market worth as much as $24 trillion, according to the report.

The bank’s thesis rests on the belief that stablecoin commerce, led by USDC, will replace fiat in global business payments. Circle, which makes money primarily through interest earned on USDC reserves, is expected to see that revenue stream grow as more institutions adopt stablecoins for faster, cheaper international transfers.

William Blair projects USDC’s market capitalization to double by 2027, reaching nearly $150 billion. In that scenario, Circle’s adjusted EBITDA could surpass $1 billion, with margins expanding as the company diversifies beyond its largest distribution partner, Coinbase (COIN).

While Circle’s current revenue model is heavily reliant on Treasury yields, the bank believes the real upside lies in infrastructure that Circle is building to drive commercial use of USDC. The Circle Payments Network (CPN), a smart contract-based system designed to connect banks, blockchains, and fintechs, and Arc, a dedicated layer-1 blockchain compatible with Ethereum, are key long-term bets.

Circle’s biggest risk, the bank notes, is timing. Much of USDC’s current usage is still confined to crypto trading, not commerce. Broader adoption of stablecoins in business will take time.

Interest rate cuts, while lowering Circle’s yield income, may ironically help drive USDC adoption by reducing the opportunity cost of holding stablecoins over fiat.

Regulatory clarity is another hurdle. The GENIUS Act has laid groundwork for U.S. stablecoin oversight, but uncertainties remain around yield offerings and token classifications.

The report also highlights the implications for Coinbase, which earns a portion of USDC’s reserve yield and operates as Circle’s largest distribution partner. William Blair believes Coinbase is underappreciated as a strategic player in USDC adoption and expects strong future revenue growth from its role in the ecosystem.

Though Circle trades at a premium — 57 times expected 2026 EBITDA — the bank argues that valuation is justified given its long-term profit potential. If Circle succeeds in making USDC the global default for cross-border commerce, that premium could pay off.