Taking into account 30 trading days horizon, Macys Inc. is expected to under-perform the Google. In addition to that, Macys is 1.21 times more volatile than Google Inc.. It trades about -0.16 of its total potential returns per unit of risk. Google Inc. is currently generating about -0.1 per unit of volatility. If you would invest 61,498 in Google Inc. on April 26, 2012 and sell it today you would lose (2,345) from holding Google Inc. or give up 3.81% of portfolio value over 30 days.
Diversification
Modest diversification
Overlapping area represents amount of risk that can be diversified away by holding Macys Inc. and Google Inc. in the same portfolio (assuming nothing else is changed)
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