Given investment horizon of 30 days, Google Inc. is expected to generate 3.79 times more return on investment than USAA. However, Google is 3.79 times more volatile than USAA Global Opportunities. It trades about -0.1 of its potential returns per unit of risk. USAA Global Opportunities is currently generating about -0.6 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
Weak diversification
Overlapping area represents amount of risk that can be diversified away by holding Google Inc. and USAA Global Opportunities in the same portfolio (assuming nothing else is changed)