Investcorp has closed the sale of SourceMedia, a diversified B2B media company serving senior professionals in the financial, technology and healthcare sectors, to Observer Capital. Back in 2004, Investcorp bought SourceMedia from the Thomson Corporation for about $350 million. Through Investcorp's stewardship, SourceMedia invested in a digital-first strategy, incorporating digital media, marketing services, events and new categories such as research. In 2011, Investcorp sold off SourceMedia affiliate Accuity, a provider of payment efficiency and risk reduction solutions, to Reed Elsevier (NYSE: ENL) for $530 million. The next year, Investcorp put SourceMedia, which owns brands such as American Banker, On Wall Street and Employee Benefit News, up for sale.