NEW YORK ( TheStreet) -- U.S. stocks were rising midday Thursday amid mixed economic data. The Dow Jones Industrial Average rose 138 points, or 1.1%, to 12,944. Leading the Dow higher were Hewlett-Packard ( HPQ), Caterpillar ( CAT) and Alcoa ( AA).
Shares of Hewlett-Packard gained 5.89% to $24.79. Personal computer shipments unexpectedly rose 1.9% in the first quarter from last year, according to research firm Gartner. TheStreet Ratings gives HP a C+ grade and hold rating. Caterpillar shares rose 3.22% to $105.03. The mining and construction equipment company sold part of its Bucyrus business to one of its Australian dealers for $400 million. Caterpillar gets an A grade from TheStreet Ratings with a buy rating and $122.28 price target. Shares of Alcoa gained 2.78% to $10.18. The aluminum giant posted a positive earnings surprise earlier this week. The biggest laggard in the index midday was McDonald's ( MCD). The stock fell 91 cents, or 0.92%, to $97.65. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: firstname.lastname@example.org. >To follow the writer on Twitter, go to Alexandra Zendrian.