Circle Internet Group is trading 4.11% up at $83.76 after launching the Arc public mainnet on September 16, 2026, a USDC-based Layer 1 blockchain for financial markets.

  • Arc’s founding validators include BlackRock, DTCC, Visa, Mastercard, ICE, and other major institutions.
  • Bitcoin and Ethereum are also higher, up 0.57% and 1.42% since the previous close, while broader indices are firmly positive. These supportive market conditions likely reinforce the company-specific Arc catalyst.