Taking into account 30 trading days horizon, Macys Inc. is expected to generate 1.41 times more return on investment than Ford. However, Macys is 1.41 times more volatile than Ford Motor. It trades about -0.16 of its potential returns per unit of risk. Ford Motor is currently generating about -0.36 per unit of risk. If you would invest 4,118 in Macys Inc. on April 26, 2012 and sell it today you would lose (342.00) from holding Macys Inc. or give up 8.31% of portfolio value over 30 days.
Diversification
Weak diversification
Overlapping area represents amount of risk that can be diversified away by holding Macys Inc. and Ford Motor Co. in the same portfolio (assuming nothing else is changed)