A roughly $60 million block of private shares in Airbnb recent traded hands among institutional investors, sources have told Business Insider. The deal signals a possible pickup in activity of Airbnb shares after a rough few months in which the company's business and its valuation were hammered by the coronavirus crisis. The sale is a sign of a wider increase in activity in the secondary market for private shares in companies that have not yet gone public as pricing stabilizes and buyers seek out discounts.