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$2.12

35%

MF Global Ltd. stock jumped to $8.17. A day after dropping the most since the firm’s IPO in July on speculation customers were withdrawing cash, the shares jumped the most after CEO Kevin Davis said the company “continues to perform exceptionally well.”

$2.09

11.2%

Citigroup Inc. stock surged to $20.71. Shares of the nation’s biggest bank posted the biggest percentage gain in the Dow Jones industrial average after the Federal Reserve lowered its benchmark interest rate by 0.75 percent, to 2.25 percent.

$1.10

22.9%

Shares of Bear Stearns Cos. climbed to $5.91. Investors speculated that JPMorgan Chase & Co.’s agreement to buy Bear Stearns for about $2 a share will be rejected and a higher offer could emerge.

$6.01

27.1%

Fannie Mae stock soared to $28.22. The mortgage giant gained on speculation that regulators are set to lower the amount of capital the firm is required to hold. Rival Freddie Mac jumped $5.40, or 26.2 percent, to $26.02.

$1.58

8.9%

Shares of General Motors Corp. gained to $19.41. The automaker has enough cash and doesn’t expect any fallout from its ties to Bear Stearns Cos. after a liquidity crisis forced the Wall Street firm’s sale, GM’s chief operating officer said.

$0.73

32.4%

Shares of Thornburg Mortgage Inc. soared to $2.98. The jumbo-mortgage specialist, struggling to meet margin calls, said it reached an agreement with five lenders that freezes demands for additional collateral through March 2009.