Wall Street ended the week with a big decline as investors grappled with two of the biggest threats to the economy: fallout from turmoil in the credit market and surging energy prices.
Buying up small blocks of stock, billionaire investor Kirk Kerkorian quietly accumulated millions of shares of Ford Motor Co. in a series of purchases in April that left the automaker "completely unaware" of his involvement until later in the month.
Shares of Mylan Inc. fell Friday after the generic drug developer cut its profit guidance spanning the next several years, though Wall Street expects the company to meet the new targets.
Shares of Leap Wireless Internation(Stock Boards, Stock Quotes, Stock Charts )al Inc. jumped Friday after the low-cost wireless carrier reported solid first-quarter results and added more subscribers than analysts had expected.
Ameristar Casinos Inc. shares rose Friday as an analyst said the casino operator is the best-positioned in a difficult environment and upgraded the stock.
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