A pair of upgrades lifts shares of Research In Motion (RIMM +1.6%). Kaufman's Shaw Wu says the...Jul. 09, 2009 11:41 AM ETBlackBerry Limited (BB) Stock, BB:CA StockBBBy: Eli Hoffmann, SA News Editor A pair of upgrades lifts shares of Research In Motion (RIMM +1.6%). Kaufman's Shaw Wu says the smartphone market is still relatively young, with room for 3-4 key players, and thinks RIM's push experience is second to none. Recommended For YouMore Trending NewsSee More »Related StocksSymbolLast Price% ChgBBBB--BB:CABB:CA--1D5D1M6M1Y5Y10YCompareTrending AnalysisTrending News