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A trader works on the floor of the New York Stock Exchange in New York.
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A trader works on the floor of the New York Stock Exchange in New York.

Check out which companies are making headlines before the bell:

Costco—The warehouse retailer reported a 3 percent increase in same-store sales for December, above estimates of 2.8 percent.

Family DollarThe discount retailer reported adjusted first-quarter profit of 44 cents per share, missing estimates by 18 cents a share, with revenue below estimates, as well. Comparable-store sales fell 0.4 percent, compared to consensus forecasts of a 1.3 percent increase. The company said it is in the midst of converting from a highly promotional strategy to one featuring "everyday low prices."

Global PaymentsThe payment solutions provider reported second quarter profit of $1.27 per share, beating estimates by 7 cents a share. Revenue was above consensus, and the company also raised its full-year forecast. Global Payments said it is benefiting from strong revenue growth and margin expansion, despite a strengthening U.S. dollar.

GoogleStifel Nicolaus downgraded the stock to "hold" from "buy," saying it does not see significant sources of future upside for the shares, despite tremendous respect for the company and its management team.

Eli LillyJefferies upgraded Lilly to "buy" from "hold," citing its anticipation of margin expansion as well as "significant pipeline opportunity."

MGM Resorts—Wells Fargo upgraded the hotel and casino operator to "outperform" from "market perform," pointing to strong underlying trends in the Las Vegas market.

ZumiezThe teen apparel retailer raising its fourth-quarter sales and earnings guidance. That follows better-than-expected sales for December.

PVH Corp.The apparel maker will close its Izod retail division by the end of fiscal year 2015, although it says the move should not impact its Izod wholesale business. The company's Izod retailer division consists of about 120 stores.

Herbalife—The nutritional products maker responded to the latest round of accusations from investor Bill Ackman, accusing him of "another tirade of misrepresentations, the sole purpose of which is to drive down our share price." Ackman has held a long-standing short position in Herbalife, claiming that the company's business is a pyramid scheme.

WD-40The company reported quarterly profit of 73 cents per share, missing estimates by 7 cents a share, with revenue also falling below estimates. The lubricant maker did see higher sales, but that was offset by increasing expenses.

Alexion PharmaceuticalsThe drug maker said its Soliris blood-clotting drug failed to meet its goals in a clinical trial.

Credit Suisse—The bank said its offices in Milan were searched by Italian tax authorities last month. Credit Suisse's Bermuda subsidiary had reportedly been under investigation for allegedly helping wealthy Italian citizens hide money.

General MotorsThe automaker is cutting prices for its 2015 Cadillac CTS sedans by as much as $3,000. That comes amid weaker than expected demand.

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