Given investment horizon of 30 days, Nektar Therapeutics is expected to under-perform the Hospira. In addition to that, Nektar is 2.07 times more volatile than Hospira Inc.. It trades about -0.17 of its total potential returns per unit of risk. Hospira Inc. is currently generating about -0.26 per unit of volatility. If you would invest 3,542 in Hospira Inc. on April 26, 2012 and sell it today you would lose (304.00) from holding Hospira Inc. or give up 8.58% of portfolio value over 30 days.
Diversification
Very weak diversification
Overlapping area represents amount of risk that can be diversified away by holding Nektar Therapeutics and Hospira Inc. in the same portfolio (assuming nothing else is changed)