Movers Roundup: Youbet.com, PerkinElmer

Among the stock activity stories for Thursday, Aug. 13, from AP Financial News:

SAN FRANCISCO (AP) — Shares of Youbet.com Inc. fell after the online horse racing and betting company reported its second-quarter earnings sank 28 percent — missing analyst expectations and providing another indication the gambling industry is still hurting from lower consumer spending during the recession.

NEW YORK (AP) — Shares of PerkinElmer Inc. traded higher after an analyst upgraded the stock, saying its price, and Wall Street expectations, have fallen to more reasonable levels in the last two weeks.

NEW YORK (AP) — Shares of AutoZone Inc. declined after an analyst downgraded the auto parts retailer, saying the do-it-yourself car repair business is showing signs of slowing.

NEW YORK (AP) — Military radio maker Harris Corp. shares surged after an analyst upgraded the stock on growing evidence that sales to the Pentagon will increase.