Assuming 30 trading days horizon, FLORIDA PWR 4.40 PFD is expected to generate 0.25 times more return on investment than Lafarge. However, FLORIDA PWR 4.40 PFD is 4.02 times less risky than Lafarge. It trades about -0.2 of its potential returns per unit of risk. Lafarge S.A. is currently generating about -0.29 per unit of risk. If you would invest 9,600 in FLORIDA PWR 4.40 PFD on April 26, 2012 and sell it today you would lose (275.00) from holding FLORIDA PWR 4.40 PFD or give up 2.86% of portfolio value over 30 days.
Diversification
Good diversification
Overlapping area represents amount of risk that can be diversified away by holding FLORIDA PWR 4.40 PFD and Lafarge S.A. in the same portfolio (assuming nothing else is changed)