Whole Foods Market, Unilever, Zynga Inc, Alcatel Lucent, Siemens AG, Telefonica S.A, Facebook and Groupon Inc. are among the companies whose shares are moving in the pre-market trading Thursday.

Whole Foods Market Inc. (WFM) stock climbed 11.20 percent to $94.00 in the pre-market trading. The company reported third quarter net profit of $116.85 million or $0.63 per share, up from $88.47 million or $0.50 per share in the same period a year earlier. The company also raised its full year earnings guidance to a range of $2.51 to $2.52 per share from its prior estimation of $2.44 to $2.47 per share.

Unilever N.V. (UN) stock surged 4.39 percent to $33.52 in the pre-market trading. The company reported second quarter sales above analysts’ expectations. Revenue rose 5.8 percent in the second quarter compared to analysts’ estimation of 4.8 percent increase as the growth of personal-care products in Asia helped offset declines in Europe, reported Bloomberg.

Zynga Inc (ZNGA) stock slumped 36.39 percent to $3.23 in the pre-market trading after lowering its full year earnings outlook. The company currently expects the fiscal 2012 adjusted net profit to be in a range of $0.04 to $0.09 per share, sharply lower from its prior estimate of $0.23 to $0.29 per share. The company also swung to the second quarter net loss of $22.81 million or $0.03 per share compared to the net profit of $1.39 million or breakeven per share in the same quarter a year ago.

Alcatel Lucent SA (ALU) stock slumped 8.49 percent to $0.97 in the pre-market trading. The company announced that it plans to cut 5,000 jobs, which is about 6 percent of its total staff, and seeks to exit or restructure unprofitable markets as part of a plan to save an additional 1.25 billion euros ($1.52 billion) by the end of the next year.

Siemens AG (SI) stock plunged 4.20 percent to $78.93 in the pre-market trading after announcing that it was getting more and more difficult to achieve its full-year profit guidance as its industrial short-cycle businesses continued to suffer fromthe customer reluctance toward spending. The company also said that it had scrapped its plan to dispose off the lighting unit Osram via an initial public offering by the year end. Instead, Europe’s largest engineering company plans to spin off Osram to Siemens’ existing shareholders and is set to retain a minority stake.

Telefonica S.A. (TEF) stock declined 2.44 percent to $10.00 in the pre-market trading after announcing that the dividend and share buyback program corresponding to 2012 fiscal year will be temporarily suspended.

Facebook Inc. (FB) stock plunged 6.99 percent to $27.29 in the pre-market trading after Zynga, which gets about 93 percent of its revenue from Facebook, slashed its full year earnings outlook. Facebook is expected to report its second-quarter net profit of $0.12 per share on the revenue of $1.15 billion after the market close on Thursday.

Groupon Inc. (GRPN) stock plunged 4.70 percent to $6.90 in the pre-market trading. The stock has a 52-week low of $7.02, a 52-week high of $31.14 and $4.68 billion in market capitalization.

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