SecondMarket

Founded in 2004 by Barry Silbert, SecondMarket, Inc. established itself as the leading secondary market for alternative investments. The platform provided a crucial source of liquidity for employees and early investors in pre-IPO technology companies, such as Facebook, Twitter, and LinkedIn, by connecting them with accredited and institutional investors. While its primary focus was on private company stock, the firm also facilitated transactions in other illiquid assets, including asset-backed securities and bankruptcy claims. Notably, SecondMarket was an early entrant into the digital currency space, launching the Bitcoin Investment Trust in 2013, which later evolved into the Grayscale Bitcoin Trust (GBTC). In October 2015, Nasdaq acquired SecondMarket, rebranding it as Nasdaq Private Market to integrate its technology and expertise into Nasdaq's suite of capital market services.