BioCryst Pharmaceuticals Inc., Tower Semiconductor Ltd., Lufkin Industries, Weatherford International Ltd, Anheuser-Busch InBev N.V., Rio Tinto Plc, Credit Suisse Group AG, EMC Corporation and ArcelorMittal are among the companies whose shares are moving in the pre-market trading Monday.

Gainers

BioCryst Pharmaceuticals Inc. (NASDAQ:BCRX) stock rallied 28.79 percent to $2.05 in pre-market trading. The developer of anti-influenza drug Peramivir surged as China’s Food and Drug Administration said it expedited the approval of Peramivir as three more infections from the deadly H7N9 bird flu was reported. The stock had jumped 29 percent, April 5.

Tower Semiconductor Ltd. (NASDAQ:TSEM) stock advanced 9.28 percent to $7.42 in pre-market trading. The stock has a 52-week low of $6.16, a 52-week high of $15.30 and $151.50 million in market capitalization.

Lufkin Industries Inc. (NASDAQ:LUFK) stock rose 4.02 percent to $66.50 in pre-market trading. The stock surged after a Wall Street Journal report quoting people familiar with the matter said General Electric Co. is close to a deal to buy Lufkin Industries Inc.

Weatherford International Ltd. (NYSE:WFT) shares went up by 2.91 percent to $12.39 in pre-market trading. The stock has a 52-week low of $8.84, a 52-week high of $15.03 and $9.21 billion in market capitalization.

Anheuser-Busch InBev NV (NYSE:BUD) shares gained 1.69 percent to $99.25 in pre-market trading. The stock has a 52-week low of $64.99, a 52-week high of $101.59 and $156.36 million in market capitalization.

Losers

Rio Tinto Plc. (NYSE:RIO) stock fell 1.66 percent to $44.96 in pre-market trading. The stock has a 52-week low of $41.59, a 52-week high of $60.45 and $84.45 billion in market capitalization.

Credit Suisse Group AG (NYSE:CS) stock dropped 1.48 percent to $26.05 in pre-market trading. The stock has a 52-week low of $16.09, a 52-week high of $30.40 and $34.21 billion in market capitalization.

EMC Corporation (NYSE:EMC) stock declined by 1.47 percent to $22.74 in pre-market trading. The stock has a 52-week low of $22.75, a 52-week high of $29.40 and $48.57 billion in market capitalization.

ArcelorMittal (NYSE:MT) stock declined about 1 percent to $12.09 in pre-market trading. The stock has a 52-week low of $11.87, a 52-week high of $18.32 and $18.97 billion in market capitalization.

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