Citi likes this stock most out of the cruise sector, sees shares rallying nearly 20%

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Hannah Miao@hannahmiao_
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Royal Caribbean International's cruise ship Allure of the Seas in Fort Lauderdale as seen from nearby Hollywood, Florida, on Nov. 11, 2010.
Joe Skipper | Reuters

Citigroup on Thursday launched coverage of the leisure sector and named its favorite cruise stock.