Among the earnings stories for Monday, April 26, from AP Financial News:

LOUISVILLE, Ky. (AP) â¿¿ Health insurer Humana Inc. reported a 26 percent surge in first-quarter profit, led by its expanding Medicare Advantage business plus a gain in its past medical claims reserves attributed to improved claims processing.

NEW YORK (AP) â¿¿ Federal rebates for energy-efficient appliances pulled shoppers back into stores, helping Whirlpool Corp.'s revenue rise and its first-quarter profit more than double, the company said.

HAYWARD, Calif. (AP) â¿¿ Ultra Clean Holdings Inc., a company that supplies equipment for semiconductor makers, made a profit in the first quarter as revenue snapped back sharply from the recession last year.

LOS ANGELES (AP) â¿¿ Veterinary services provider VCA Antech Inc. said its first-quarter profit fell slightly as a rise in costs offset a revenue boost.

SAN FRANCISCO (AP) â¿¿ Texas Instruments Inc.'s first-quarter profit leaped after the chip maker improved results in product lines and lowered its restructuring costs.

SAN JOSE, Calif. (AP) â¿¿ Electronics contract manufacturer Sanmina-SCI Corp. posted a $10 million quarterly profit Monday, reversing a year-earlier loss with improving sales and shrinking expenses.

DALLAS (AP) â¿¿ Building materials maker Eagle Materials Inc. cited increased operating costs due to extended shutdowns for maintenance and inventory control of its four cement plants as it reported that its fiscal 2010 fourth-quarter profit plunged 73 percent.

BUFFALO, N.Y. (AP) â¿¿ First Niagara Financial Group Inc. said profit rose nearly 80 percent in the first quarter as interest income growth more than compensated for higher loan-loss provisions.

NEW YORK (AP) â¿¿ Ceragon Networks Ltd. reported that its first-quarter profit rose sharply on growing demand and revenue it was able to recognize earlier than expected.

TULSA, Okla. (AP) â¿¿ Alliance Resource Partners LP cited higher coal prices as it recorded healthier first-quarter profits and a double-digit rise in revenue.

CHICAGO (AP) â¿¿ PrivateBancorp Inc. reported a wider-than-expected loss for the first quarter as fee-related income fell and the company set aside more money to cover bad debt.

WALNUT CREEK, Calif. (AP) â¿¿ Mortgage insurer PMI Group Inc. said late Sunday that its first-quarter loss widened on lower premiums and a change in the value of some of its debt obligations.

NEW YORK (AP) â¿¿ Travelzoo Inc. reported that its profit multiplied in the first quarter as its subscriber base and online advertising grew from a year-ago quarter weighed down by a one-time charge.

GREENVILLE, S.C. (AP) â¿¿ Electronic components maker AVX Corp. reported it moved to a fiscal fourth-quarter profit from a year-ago loss that was weighed by higher charges and lower sales.

OMAHA, Neb. (AP) â¿¿ Caterpillar says the global economy is clearly improving, so it's planning to increase production of its mining equipment after reporting a strong first-quarter profit.

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