Walker & Dunlop Inc. has provided a $707 million Fannie Mae credit facility against a portfolio of student-housing properties that Scion Student Communities LP had purchased, mostly from Harrison Street Real Estate Capital. The credit facility marks the fourth financing, collectively totaling $2 billion, that Walker & Dunlop has provided to the Scion venture since 2016. The venture is comprised of the Canada Pension Plan Investment Board, Singapore's sovereign wealth fund and the Scion Group of Chicago. In 2016, Walker & Dunlop had arranged a $672 million Fannie...