Summary: Social Finance Inc. — better known as SoFi — is an online financial company founded in 2011 by a group of Stanford business school students. In 2012, SoFi launched its Student Loan Refinancing program for federal and private student loans. Currently, SoFi serves more than 6.9 million customers and has expanded its product offering to include lending, investing, personal banking, insurance, and more. SoFi was also ranked as one of the 10 best online banks of 2025. SoFi product overview Checki ...