An upgrade for Alibaba, Facebook's a BUY, but Micron mightn't soar quite as high, all in Tuesday's Analysts' Actions. Alibaba was upgraded to BUY from HOLD at Stifel with a $99 price target. Analysts said regulatory risks surrounding counterfeit items on the website have subsided. Brean Capital initiated coverage of Facebook with a BUY rating and $96 price target. The firm said the company can harness growth opportunities in emerging markets. Micron Technology had its OUTPERFORM rating maintained at RBC Capital, but share growth was capped to $40 based on lowered earnings estimates and weaker DRAM demand.