ARK Invest, owned by Cathie Wood, bought nearly 4.50 million shares in stablecoin issuer Circle (ticker: CRCL) on its first day of listing, valuing its position at $373 million at the closing price of the day. ARK Invest includes USDC issuer Circle in its portfolio, along with other crypto-related companies such as Coinbase (COIN), Robinhood (HOOD) and Block (XYZ), providing exposure to the crypto industry.