We calculate the total cryptocurrency market capitalization as the sum of all cryptocurrencies listed on the site. Another similarity between cryptocurrencies and stocks is the way that from this source both assets are bought and sold. Platforms such as Robinhood, Wealthsimple, and SoFi have started blurring the lines between digital assets and legacy financial products. Users can access and trade their stocks and cryptocurrencies using the same frictionless platform. Getty Images/sorbetto Justin Sun's HTX Services Restored After Exchange Hit by 'DDoS' Attack And last month, the first futures-based Bitcoin exchange-traded fund (ETF) started trading—with three other Bitcoin ETFs set to follow. The approval of a Bitcoin ETF, which will allow for major investment inflows from institutional investors, was a milestone for the legitimization of the cryptocurrency market.