Premarket Roundup: Radiant, Credit Cards

Among the premarket stories for Monday, August 24, from AP Financial News:

HARTFORD, Conn. (AP) — An analyst upgraded Radiant Systems Inc. Monday, citing the success of its payment processing product and an improved outlook in one of its key markets.

CHARLOTTE, N.C. (AP) — Shares of Capital One Financial Corp., Discover Financial Services and American Express Co. rose Monday after Barclays Capital upgraded the companies saying credit card issuers will see earnings steadily increase in the next three to five years.

NEW YORK (AP) — Shares of luxury homebuilder Toll Brothers Inc. have risen too far, said Citi Investment Research, downgrading the stock to "Hold" from "Buy" and driving shares lower Monday morning.

NEW YORK (AP) — The Chinese gambling enclave of Macau should see improved business during the second half of the year, an analyst said Monday, citing solid gaming revenue growth and the likelihood of easing visa restrictions.

NEW YORK (AP) — Sales of U.S. firearms are likely to decline this year, an analyst said Monday as he downgraded shares of handgun maker Smith & Wesson Holding Corp.

NEW YORK (AP) — Shares of chip maker Advanced Micro Devices Inc. rose 6 percent in premarket trading on Monday after a Citigroup analyst upgraded it to "Buy" from "Hold," saying he sees a chance for increased market share with AMD's main customer, PC maker Hewlett-Packard Co.