Given investment horizon of 30 days, Google Inc. is expected to generate 1.2 times more return on investment than Eni SPA. However, Google is 1.2 times more volatile than Eni SpA. It trades about -0.1 of its potential returns per unit of risk. Eni SpA is currently generating about -0.37 per unit of risk. 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
Good diversification
Overlapping area represents amount of risk that can be diversified away by holding Google Inc. and Eni SpA in the same portfolio (assuming nothing else is changed)
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