Fortune 500: Stock watch

The S&P has sunk 27% since Lehman Brothers declared bankruptcy. But a few Fortune 500 companies have flourished, due to an increased demand for cheap products, dropping input costs and undervalued shares. Here are the biggest gainers since Sept. 15.

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Freddie Mac
Freddie Mac
Return: +71.8%

Shares of the embattled mortgage financing giant have soared since Sept. 15, the first trading day after Lehman's demise - to a whopping 67 cents. Freddie's sharp decline began over the summer, when the company's portfolio of toxic mortgages prompted a selloff. Stocks posted slight gains after the government granted the insolvent business a backstop, but Freddie's recent announcement that it lost $25 billion last quarter - and needs more federal loans - will likely preclude it from topping $1.

Correction: An earlier version of these charts incorrectly labeled the stock price increases as year-to-date. Price increases are from Sept. 15 through Nov. 14.
NEXT: World Fuel Services
Last updated November 18 2008: 11:34 AM ET
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