12/17/2014 02:19:00 PMA few students at UNT tripled their portfolio in just four weeks. Listen to team captain Mason Hendrickson discuss strategy on CNBC's Closing Bell. Television & FilmFacultystory A few students at UNT tripled their portfolio in just four weeks. TD Ameritrade CEO Fred Tomczyk, provides insight to the college challenge. The winning team's captain Mason Hendrickson, discusses his team's strategy.