(By Balachander) A number of stocks were upgraded and downgraded by equities research analysts on Tuesday.
AptarGroup Inc. (NYSE: ATR): RW Baird upgraded rating on the stock to "outperform" from "neutral". Shares advanced 3.29 percent to trade at $50.82.
Boeing Co. (NYSE: BA): BB&T Capital downgraded rating on the stock to "hold" from "buy". Shares dropped 2.00 percent to trade at $74.60.
Celgene Corp. (NASDAQ: CELG): Piper Jaffray upgraded rating on the stock to "overweight" from "neutral". RBC Capital raised rating to "outperform" from "sector perform". Jefferies increased price target to $104 from $94. Shares traded 4.26 percent higher at $89.35.
EMC Corp. (NYSE: EMC): William Blair downgraded rating on the stock to "market perform" from "outperform". Shares retreated 1.78 percent to trade at $23.70.
Fusion-IO Inc. (NYSE: FIO): William Blair downgraded rating on the stock to "market perform" from "outperform". Shares plunged 8.21 percent to trade at $19.46.
Joy Global Inc. (NYSE: JOY): Piper Jaffray upgraded rating on the stock to "overweight" from "neutral". Shares shed 0.69 percent to trade at $66.52.