NEW YORK, Nov 11 (Reuters) - Some U.S. stocks to watch on Tuesday:

TYCO INTERNATIONAL

The industrial conglomerate's stock dropped 14.2 percent to $21.74 after Tyco warned that its fiscal-year profit would be well below Wall Street's expectations due to the economic downturn and the impact of the stronger U.S. dollar.

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GENERAL MOTORS INC

GM's stock fell for the fifth straight day, sliding 13.1 percent to $2.92 after hitting an all-time low as investors worried about the U.S. auto sector's chances of securing a cash infusion from the government.

General Motors, whose stock is a Dow component, scaled back its presence at the L.A. Auto Show to cut costs. Earlier in the day, GM's stock hit an all-time low at $2.76 on the New York Stock Exchange.

ALCOA INC

The aluminum producer's stock fell 7.1 percent to $10.94 following a rating downgrade and news that the company plans to cut 350,000 tonnes of worldwide aluminum-making capacity.

AMERICAN EXPRESS

The No. 4 credit card issuer's stock dropped 5 percent before paring losses on Tuesday, a day after it won approval from the Fed to become a bank holding company.

Analysts said the move would help the company address its funding concerns. Shares of the Dow component were down 3 percent at $23.27.

CITIGROUP

The bank holding company's stock tumbled 3.7 percent to $10.80 on the New York Stock Exchange after it launched a program that could result in $20 billion of mortgage refinancings, focusing on areas "likely to face extreme economic distress."

LAS VEGAS SANDS CORP

The troubled casino company's stock dove after Las Vegas Sands priced a public offering of 181.8 million common shares at $5.50 per share.

Sands' stock dropped 34 percent to $5.27 on Tuesday; it has fallen from more than $122 since last December.

STARBUCKS CORP

Shares of the coffee shop chain fell 2.1 percent to $9.99 after it cut its plan for new international coffee shops and lowered its 2009 outlook after reporting a deep decline in fourth-quarter earnings.

CHESAPEAKE ENERGY

The company's shares slid about 5.5 percent to $22.36 after Norway's StatoilHydro said it would pay about $3.38 billion for a stake in Chesapeake's shale gas assets, in a signal that cash-rich major oil companies are seeking the assets of companies hit by the credit crisis.

SIRIUS XM RADIO INC

The satellite radio provider's shares fell 7.2 percent to about 25 cents after it wrote down $4.8 billion of goodwill related to an acquisition and said that problems in the auto industry had hurt subscriber growth.

DTS INC

The entertainment technology company's stock fell 6.1 percent to $16.55 after it said 2008 earnings will be on the lower end of previous projections.

BIDZ.COM INC

Shares sank 31.3 percent to $4.09 after the online retailer posted a 9 percent drop in quarterly profit and cut its full-year revenue forecast.

TRIAD GUARANTY INC

The mortgage insurer's shares fell 19.8 percent to 65 cents after it reported a fivefold increase in quarterly loss as it continued to be battered by rising defaults and foreclosures.

OPTIMER PHARMACEUTICALS INC

Optimer's stock more than doubled -- jumping 105 percent to about $9.43 -- after the company said its experimental anti-infective drug, OPT-80, met both its main and secondary goals in a late-stage trial.

The drug proved more effective than an existing drug in treating patients suffering from a hospital-acquired infection.

On Monday, Optimer's stock closed at $4.60 on Nasdaq.

TALEO CORP

The stock of Taleo, which provides recruiting and work force management software, hit an all-time low at $6.05 on the NYSE on Tuesday, a day after the company delayed filing its quarterly results.

Near the close of NYSE regular trading on Tuesday, Taleo's stock was down 27.5 percent at $8.01. Keywords: MARKETS STOCKS HEADLINES (deepa.seetharaman@reuters.com; +1 646 223-6250; Reuters Messaging: deepa.seetharaman.reuters.com@reuters.net)

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