Proving that big data and digital companies continue to intrigue big investors, big data analytics company Informatica has been purchased by private equity group Permira and the Canada Pension Plan Investment Board for $5.3 billion. It is reported as being the largest leveraged buyout thus far in 2015. Informatica, which provides analytics, cloud computing and information security services to its brand name clients, brought in revenue of $1 billion in 2014.