Posted in Web Largest U.S. cryptocurrency exchange Coinbase files for … January 3, 2021 California-based Coinbase, founded in 2012, has long been a go-to spot to buy and sell cryptocurrencies, and the company has grown into the largest digital currency exchange in the U.S. https://www.cnbc.com/2020/12/17/largest-us-cryptocurrency-exchange-coinbase-files-for-ipo-as-bitcoin-soars-past-23000.html