) -- Stocks slumped Thursday with the major U.S. equity indices weighed down by

disappointing housing and jobless claims data


New single-family home sales dropped 2.2% to 307,000 in December, while initial jobless claims rose 21,000 last week to 377,000.


Dow Jones Industrial Average

lost 22.33 points, or 0.18%, to 12,734.63 on Thursday. The

S&P 500

fell 7.6 points to 1,318.45 and the

Nasdaq Composite

finished 13.03 points lower at 2,805.28.

Breadth within the Dow was negative with 23 of the index's 30 components giving up ground


(CSCO) - Get Report

ended Thursday flat.

The biggest decliners Thursday were


(T) - Get Report



(HPQ) - Get Report



(AA) - Get Report


AT&T shares fell 2.52% to $29.45. The telco giant beat analysts' fourth-quarter revenue estimates, boosted by sales of


iPhone 4S

but its earnings trailed the average analysts' view


TheStreet Ratings

gives AT&T an A- grade with a


price target.

Shares of HP fell 1.17% to $27.99. This company receives a C grade from

TheStreet Ratings

as well as a hold rating.

Alcoa shares dropped 1.15% to $10.36.

TheStreet Ratings

has a C- grade and hold rating on the aluminum company.

The biggest percentage gainers among the blue chips were


(CAT) - Get Report



(MMM) - Get Report

, which both reported strong quarterly results before the opening bell.

Caterpillar shares rose 2.07% to $111.31. This company reported

fourth-quarter earnings

of $2.23 a share, beating analysts' estimates of $1.73.

Caterpillar guided to 2012 revenue of between $68 billion and $72 billion and profit of about $9.25 a share. Analysts forecast 2012 profit of $9.07 a share.

TheStreet Ratings

gives Caterpillar a

B+ grade

with a buy rating and a price target of $122.14.

Shares of 3M increased 1.27% to $87.58. Fourth-quarter profit of $954 million, or $1.35 a share,

beat analysts' estimates of $1.31 a share

. The company's fourth-quarter sales rose 5.7% to $7.1 billion.

3M receives a

B grade


TheStreet Ratings

with a buy rating and $99.10 price target.


Written by Alexandra Zendrian in New York


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Alexandra Zendrian