Given investment horizon of 30 days, Google Inc. is expected to generate 0.76 times more return on investment than VMware. However, Google Inc. is 1.32 times less risky than VMware. It trades about -0.1 of its potential returns per unit of risk. VMware Inc. is currently generating about -0.34 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
Modest diversification
Overlapping area represents amount of risk that can be diversified away by holding Google Inc. and VMware Inc. in the same portfolio (assuming nothing else is changed)