Among the earnings stories for Friday, March 13, from AP Financial News:

CHESTER, W.Va. (AP) ¿ MTR Gaming Group Inc. shares tumbled Friday after the casino operator reported a narrower fourth-quarter loss but missed analysts' estimates.

DES MOINES, Iowa (AP) ¿ Harbin Electric Inc., a Chinese manufacturer of electric motors, said Friday fourth-quarter profit rose 45 percent on increased sales.

FORT LAUDERDALE, Fla. (AP) ¿ National Beverage Corp., which distributes beverages and makes its own soda and energy drinks, said Friday its third-quarter profit rose 11 percent on higher sales.

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