Circle's first-quarter numbers confirm a deep reliance on reserve interest, which accounted for 94% of its $694 million revenue. This reveals the current business model's fragility and shows why the company is aggressively developing a four-layer financial stack around its Arc blockchain, aiming to diversify income and reshape its identity beyond the USDC issuer label.

Circle’s Multi-Layered Financial Stack and Strategic Shift

Arc is positioned as an economic operating system settling transactions in under a second, with fees paid in USDC and optional privacy features. The stack consists of:

  • Base layer hosting assets such as USDC, EURC, and yield-generating USYC
  • Developer tools like wallets and the Cross-Chain Transfer Protocol (CCTP)
  • Circle’s proprietary applications including Mint and StableFX

Since its October 2025 launch, over 100 firms have joined the Arc testnet, including major financial players Goldman Sachs, Mastercard, and Visa. The testnet processed around 15 million transactions in the week ending July 15, signaling strong institutional validation and real-world engagement.

Backing this initiative is a $222 million ARC token presale at a $3 billion valuation, attracting heavyweight investors such as BlackRock, a16z crypto, and ARK Invest. This capital infusion supports Circle's pivot to a more full financial infrastructure, aiming to reduce dependency on reserve interest and enhance sustainable revenue.

Why Tether Remains Dominant Despite Circle’s Innovations

Despite Circle’s ambitions, Tether’s USDT stablecoin market cap stands near $184 billion, significantly overshadowing USDC’s $73 billion, which has declined from $77 billion since March. Trading volume disparities are even starker: USDT turnover reached approximately $48 billion in a single day, four times that of USDC. plus the Tron blockchain alone carries $89 billion in dollar-pegged stablecoins, exceeding USDC’s entire supply.

Historical factors explain this resilience. USDC’s 2023 depeg to $0.88, caused by frozen reserves at Silicon Valley Bank, left a lasting trust deficit. Traders remain cautious about Circle’s stablecoin, affecting adoption and liquidity.

Tether’s operational agility also contributes to its dominance. For example, it rapidly froze $131 million in USDT linked to Iran following new US sanctions a responsiveness Circle has yet to match. This operational decisiveness reinforces Tether's standing as the primary dollar proxy in crypto.

The stablecoin market's competitive dynamics highlight the challenges Circle faces in shifting perception and market share, despite regulatory progress such as its recent Office of the Comptroller of the Currency (OCC) approval for a national trust bank. This license bolsters Circle’s regulatory credibility but does not immediately alter entrenched market realities.

This material is informational and not financial advice.