Coinbase (COIN) shares fell 5.3% to $67.07 on July 25, as it emerged that the company is facing a SEC probe that could lead to a lawsuit. COIN stock has dropped more than 70% year-to-date amid a broad selloff in equities and cryptocurrencies. Coinbase operates a crypto trading platform, offering products such as Bitcoin (BTC-USD), Ethereum (ETH-USD), and Dogecoin. Did Coinbase’s Crypto Listings Break Rules? According to a Bloomberg report, the SEC is investigating whether Coinbase has violated its rules by offering securities trading to its members. Coinbase offers more than 150 cryptocurrencies, and it has been expanding its listings to meet traders’ demand.