Considering 30-days investment horizon, JPMorgan Chase & is expected to under-perform the Macys. In addition to that, JPMorgan is 1.34 times more volatile than Macys Inc.. It trades about -0.45 of its total potential returns per unit of risk. Macys Inc. is currently generating about -0.16 per unit of volatility. 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
Modest diversification
Overlapping area represents amount of risk that can be diversified away by holding JPMorgan Chase & Co. and Macys Inc. in the same portfolio (assuming nothing else is changed)