Southern Methodist University hired Rakesh Dahiya from the University of Florida to oversee an investment portfolio of $1.5 billion. Dahiya, who oversaw hedge funds as well as equity and fixed-income strategies at the University of Florida Investment Management Corp. since 2011, will take over as Southern Methodist’s chief investment officer and treasurer on Sept. 12, the Dallas-based school said Wednesday in a statement. He previously worked for Washington University in St. Louis.