Given investment horizon of 30 days, Apollo Group Inc. is expected to under-perform the Capella. But the stock apears to be less risky and, when comparing its historical volatility, Apollo Group Inc. is 1.44 times less risky than Capella. The stock trades about -0.22 of its potential returns per unit of risk. The Capella Education is currently generating about -0.05 of returns per unit of risk over similar time horizon. 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
Very weak diversification
Overlapping area represents amount of risk that can be diversified away by holding Apollo Group Inc. and Capella Education Co. in the same portfolio (assuming nothing else is changed)
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