Both sections of MIT class 15.433 (Financial Markets), taught this fall by visiting associate professor of finance Hong Ru MFin ’10, PhD ’15 at the MIT Sloan School of Management, include over 100 students from the master of finance program. However, when he joined the program’s inaugural class just over a decade ago, this number was much smaller. “I started in the program in 2009 and graduated in 2010, and there were only 26 students then. Not like today,” says Ru, who is an associate professor of banking and finance…