NEW YORK (

TheStreet

) -- U.S. stock futures signaled a lower open on Wall Street Tuesday and European shares dipped on an earnings decline from Swiss bank

UBS

(UBS) - Get Report

and as debt-deal talks in Greece dragged on for another day.

In Asia, the benchmark Shanghai Composite Index finished off by 1.7% and Japan's Nikkei index fell 0.1%.

In the U.S. on Monday,

stocks finished lower

as investors fretted that Greece may be headed for a default.

The

Dow Jones Industrial Average

fell 17.1 points, or 0.1%, to 12,845. The

S&P 500

lost 0.6 point, or 0.04%, to 1,344, and the

Nasdaq

slid 3.7 points, or 0.1%, to 2,902.

The economic calendar in the U.S. on Tuesday is light, but

Federal Reserve

Chairman Ben Bernanke will provide testimony before the Senate Budget Committee at 10 a.m. EST.

UBS

(UBS) - Get Report

, the Swiss bank, posted a 76% decrease in fourth-quarter earnings.

UBS' investing bank division reported a second consecutive quarterly pretax loss of 256 million francs, which included a $2 billion rogue trader loss. UBS predicted further weakness in investment banking.

BP

(BP) - Get Report

, the oil giant, said fourth-quarter profit rose 38% to $7.69 billion on higher oil prices and it raised its quarterly dividend by 14%.

Replacement cost profit jumped 65% to $7.6 billion. Revenue rose 15% to $96.3 billion.

BP goes to court at the end of the month in New Orleans for the beginning of lawsuits related to the Gulf of Mexico oil spill in April 2010.

Earnings are expected Tuesday from

Coca-Cola

(KO) - Get Report

and

Walt Disney

(DIS) - Get Report

.

Mining company

Xstrata

and commodities dealer

Glencore

agreed to a

$90 billion merger

Tuesday that will create the world's fourth-largest natural resources company.

The combined company will control a chain of businesses from mining to refining, storage and shipping of basic commodities like coal, copper and corn.

-- Written by Joseph Woelfel

>To contact the writer of this article, click here:

Joseph Woelfel

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