Travel/leisure stocks under pressure; Tiffany slashes outlook; Xerox jumps on Icahn stake

Here are some of the stocks the Yahoo Finance team will be watching for you today. 

Priceline (PCLN), United Continental (UAL), American Airlines (AAL), and other travel and leisure companies are under pressure in early trading after the U.S. State Department issued a worldwide travel alert for Americans amid increased terror threats ahead of the busy Thanksgiving weekend. This comes as Brussels remains on lockdown for a fourth day following attacks in Paris and Mali.

Xerox (XRX) shares soared after activist investor Carl Icahn disclosed in a security filing that he has taken a 7.13% stake in the printer maker, making him the second-biggest shareholder. Icahn called the stock undervalued and said he plans to "have talks with management.”

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Tiffany (TIF) reported earnings and revenue that missed expectations for the third quarter. Revenue fell more than 2% from a year earlier as the strong dollar took a toll on sales. Tiffany also slashed its outlook for the year ahead of the all-important holiday shopping season.

Campbell Soup (CPB) raised its outlook for the year as its cost cutting moves took effect and margins improved. The company also posted fiscal first-quarter earnings per share that blew past Wall Street forecasts, while revenue matched estimates.

Brocade Communications (BRCD) issued a weak outlook for the current quarter citing a slowdown in government spending, despite reporting earnings and revenue that topped analysts' estimates in its fiscal fourth quarter.