Nelnet Inc. , a Nebraska-based lending conglomerate holding over $25b in student loans, has invested an undisclosed amount in CommonBond. Nelnet will also be providing at least $150m in funding to finance more loans. This funding comes after Social Finance's (SoFi) latest $200m raise this week. Online lenders continue to provide an alternative and challenge traditional lenders. CommonBond says it saves borrowers an average of $10,000 over the life of a 10-year loan.