Among the stock activity stories for Monday, Jan. 4, from AP Financial News:

¿ Shares of Boeing Co. rose after two investment firms upgraded stock in the aircraft maker, citing factors including an expected increase in orders.

¿ Shares of investment bank Morgan Stanley advanced as analysts upgraded the stock, saying 2010 should bring continued profitability and share price growth.

¿ Shares of health care consulting firm The Advisory Board Co. rose to their highest price in more than a year after an analyst upgraded the stock.

¿ Shares of trucking operator Heartland Express Inc. rose after investment firm Robert W. Baird upgraded the stock, saying conditions in the freight industry are improving.

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