Benzinga's Top Pre-Market Gainers

Tudou Holdings Ltd (NASDAQ: TUDO) soared 124.76% to $34.59 in the pre-market trading. Youku Inc (NYSE: YOKU) announced its plans to buy Tudou in a 100% stock-for-stock transaction.

Meru Networks Inc (NASDAQ: MERU) surged 11.38% to $4.99 in the pre-market session. MERU's trailing-twelve-month revenue is $90.47 million.

Orexigen Therapeutics Inc (NASDAQ: OREX) added 8.92% to $4.03 in the pre-market session. Orexigen posted a smaller Q4 loss.

Carnival Corporation (NYSE: CCL) moved up 2.32% to $31.28 in the pre-market session. CCL's PEG ratio is 1.60.

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