Marketplace lender Social Finance – a mortgage originator with a track record in securitizing consumer and student loans – has filed for a state bank charter in Utah and is also pondering selling stock to the public. For now, the privately held technology-centric firm isn’t saying much about its plans, including the initial public offering. One source familiar with the company’s mortgage operation said SoFi recently hired one executive away from a larger player by dangling the IPO and stock options. To date, there has been...