NEW YORK, May 15, 2019-- CompStak, the leader in commercial real estate transaction data and analytics, recently raised $12 million in its Series B Financing round, which will help accelerate the company's rapid growth. IA Capital led the investment round with participation from existing investors Canaan Partners, RealPage, Inc., and 500 Startups. The investment brings CompStak's total funding since its launch in 2012 to $28 million, including a strategic investment from Moody's in 2017.