Wall Street mania propels Prosper to $2 bln value By: CNBC.com News April 09, 2015 at 07:00 AM EDT On the heels of LendingClub's blockbuster IPO last year, smaller rival Prosper has raised $165 million, valuing the company at $1.87 billion. Read More >> Related Stocks: BlackRock Credit Suisse Group ADR JPMorgan Chase & Co Lendingclub Corp Wells Fargo