Earnings roundup: CyberSource, Saia

Among the earnings stories for Friday, Jan. 30, from AP Financial News:

MOUNTAIN VIEW, Calif. (AP) _ Shares of CyberSource Corp. surged more than 22 percent Friday on enthusiasm about the payment-software and services company's quarterly profit that topped Wall Street's projections.

NEW YORK (AP) _ Shares of Saia Inc. leaped Friday, after it reported an unexpected fourth-quarter profit as cost cuts offset lower demand.

NEW YORK (AP) _ Data Domain Inc., a company that provides data backup and disaster recovery systems, saw shares dive Friday after its fourth-quarter earnings missed estimates.

PITTSBURGH (AP) _ L.B. Foster Co. said Friday its fourth-quarter profit plunged 93 percent from the year-earlier period, which was boosted by the sale of an investment, but the results still beat Wall Street's expectations.

FORT WORTH, Texas (AP) _ Shares of AmeriCredit Corp. tumbled more than 12 percent on Friday after the auto dealer finance company said it may breach a credit agreement and warned its loan portfolio could shrink by nearly one-third this year.

PAOLI, Pa. (AP) _ Ametek Inc., a manufacturer of electric motor and aircraft monitoring equipment, said Friday that its fourth-quarter profit fell 29 percent and its top executive said "difficult economic conditions" will persist this year.