7. Fastenal (FAST) is a wholesaler and retailer of industrial and construction supplies. It has 2010 revenue of $2.2 billion. Its shares are up 36% this year, giving it a market value of $12.8 billion. It has a 1.38% dividend yield.
8. Precision Castparts (PCP) is one of the few providers of highly complex castings that are used to make jet engines and power turbines that have to have structural integrity under intense thermal conditions. Its shares have risen 22% this year, giving it a market value of $24 billion. Its shares' average annual return over 15 years is 19.5%, almost three times the yearly average of the S&P 500.