NEW YORK, June 21, 2011 /PRNewswire/ -- Apax Partners ("Apax") has announced the successful initial public offering of Bankrate, Inc. (NYSE: RATE ) ("the Company"), an online personal finance portal, marking the start of the next phase of the growth strategy for the business. Following the completion of the IPO, Apax Funds remain the majority shareholder with approximately 70% ownership of Bankrate's common stock.