Given investment horizon of 30 days, Capella Education is expected to generate 0.5 times more return on investment than Career. However, Capella Education is 2.0 times less risky than Career. It trades about -0.05 of its potential returns per unit of risk. Career Education Corporation is currently generating about -0.09 per unit of risk. If you would invest 3,180 in Capella Education on April 25, 2012 and sell it today you would lose (117.00) from holding Capella Education or give up 3.68% of portfolio value over 30 days.
Diversification
Poor diversification
Overlapping area represents amount of risk that can be diversified away by holding Capella Education Co. and Career Education Corp. in the same portfolio (assuming nothing else is changed)