Social Finance, a former fintech darling, has been through the ringer of late: cofounder, CEO and “brain” Michael Cagney resigned midmonth amid sexual harassment allegations and other top executives have departed as well, raising questions about the company’s direction – and future. SoFi, as it’s known, was a “disruptor” of sorts in the financial services arena, refinancing student loans made to millennials at cheaper rates and then securitizing the paper. Over the past 18 months, the privately held startup has been...