Early movers: S, CVS, AAPL, GOOG, MMC, BCS & more
Traders work the floor of the New York Stock Exchange on the evening of January 23, 2014 in New York City.

Sprint –The mobile carrier posted a smaller than expected loss of 26 cents per share, with revenues above analyst estimates. The company added 58,000 customers to its postpaid platform during the quarter.

Regeneron –The drug maker is expecting sales of up to $1.8 billion for its Eyelea eye drug this year, because of expected approvals for newer uses.

CVS Caremark –The drug store chain reported fourth quarter profit of $1.12 per share, excluding certain items, one cent above estimates, with revenue also beating consensus. CVS was helped by increased prescription business, as well as new generic drug introductions.

Check out which companies are making headlines before the bell:

Entergy –The utility earned $1.00 per share, excluding certain items, 19 cents above estimates. Revenue was also above Street forecasts, as Entergy benefitted from increased industrial sales.

Ingersoll-Rand –The maker of heating, air conditioning and fluid handling systems matched estimates with fourth quarter profit of 61 cents per share, but gave a weaker than expected current quarter forecast. The company said inflation and increased investment spending are impacting results, although it's being helped by increased productivity savings.

Marsh & McLennan –Marsh beat estimates by a penny with fourth quarter profit of 57 cents per share, excluding certain items. The company's results got a boost from improvements in its insurance and consulting businesses.

Reynolds American –The tobacco producer fell shy of estimates by four cents with fourth quarter profit for 77 cents per share, with revenue shy of estimates as well. The company did raise its dividend by 6.3 percent.

Urban Outfitters –The clothing retailer reported fourth quarter revenue totaled $905.9 million, short of the $926 million analysts were expecting. Same-store sales during the quarter rose 1 percent.

Rackspace Hosting –The web hosting company matched estimates with fourth quarter profit of 14 cents per share, but the bigger news for investors is the retirement of the company's chief executive officer, Lanham Napier. He will be succeeded by co-founder and former CEO Graham Weston.

Nuance Communications –Nuance earned 24 cents per share for its first quarter, excluding certain items, three cents above estimates, with revenue also exceeding consensus. The provider of language software said it is making good progress on its transition to a recurring revenue model.

Annie's –Annie's reported fiscal third quarter profit of 17 cents per share, a penny short of estimates, and the natural foods producer also cut its full year forecast due to higher commodity costs.

United Continental –The airline reported a 1.6 percent drop in revenue passenger miles compared to a year earlier, breaking a four-month string of gains.

WebMD –The health information company raised guidance for the final quarter of 2013, ahead of its formal earnings report on February 20. It sees fourth quarter earnings of 23 to 25 cents per share compared to the prior 17 cents, and also predicts current quarter revenue above estimates. The company has also announced a $50 million stock buyback program.

Apple –The tech giant lost its latest bid to block a court appointed monitor who has been in charge of overseeing its compliance with a settlement over e-book pricing. Apple had argued that the monitor's work was causing irreparable harm.

Barclays –The bank will cut 12,000 jobs this year at its investment bank, although it is also paying out higher bonuses.

FireEye –FireEye is introducing new intrusion prevention systems that it hopes to debut by the middle of this year. The new offerings take on existing products from competitors like Cisco Systems and Palo Alto Networks .

Google –The search giant signed a deal with comScore for technology that will allow advertisers to track the effectiveness of online ads in near-real time.

Kraft Foods Group –Kraft will from its "Singles" line of cheese products.

—By CNBC's Peter Schacknow

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