7. United Technologies ( UTX) builds elevators, HVAC systems and helicopters. Second-quarter profit increased 14% to $1.1 billion, or $1.20 a share, as revenue grew 5.6% to $14 billion. The operating margin remained steady at 14%. United Technologies has $5 billion of cash and $12 billion of debt. Its stock sells for a forward earnings multiple of 13, a sales multiple of 1.2 and a cash flow multiple of 11, on par with industry averages. Of analysts covering United, 79% advocate purchasing its shares. A median target of $83.90 suggests a potential return of 26%.