LendingClub has filed for an IPO to raise $500M. It will be interesting to see where the valuation lands, considering that the company's most recent raise in June put the valuation at $4B. Fortunately, LendingClub's revenue has soared, 2013 revenue was $98M, which was a 190% increase over the 2012 numbers. First half revenue for 2014 is already $86.9M.