Home Depot ( HD) and Alcoa ( AA) were two of a handful of Dow components that closed higher, while Kraft Foods ( KFT), Chevron ( CVX), and Coca-Cola ( KO) were the biggest drags. On the New York Stock Exchange, AAR ( AIR), a products and services provider to aviation and defense industries, was the weakest-performing stock, followed by Navios Maritime Acquisition ( NNA). AutoZone ( AZO) made gains after beating analysts' estimates with a third-quarter profit of $4.12 a share and sales that rose 9.9%, to $1.82 billion. The stock added $10.32, or 5.6%, to $194.57. Dynegy ( DYN), USEC ( USU) and AK Steel ( AKS) also made gains, putting in the best performance on the NYSE. In its continuing efforts to stop the oil leak in the Gulf of Mexico, BP ( BP) is now planning a "top kill" operation under which it will inject heavy drilling fluids into the well to stem the flow of oil and gas. Yahoo! ( YHOO) acquired Koprol, a Jakarta, Indonesia-based social networking site. Dell ( DELL) said its Streak, a five-inch Android-based Tablet, will go on sale across the U.K. early next month and in the U.S. later in the summer. Microsoft ( MSFT) said Entertainment and Devices Division head Robbie Bach will retire in the fall, according to a press release issued today. J Allard, senior vice president of Design and Development in the division, will also be leaving Microsoft, though the company says he will take on an adviser role for CEO Steve Ballmer.