Portfolio Theory Sources of Risk  http://youtu.be/d1uXLNxJg68 Beta http://www.youtube.com/watch?v=muPDIGi4QyY CAPM http://www.youtube.com/watch?v=9AloZBivjfg Security Market Line http://youtu.be/R3oAOCR2S5I Components of Risk http://www.youtube.com/watch?v=8ROK7ov20no&feature=youtu.