Trulia (TRLA) was downgraded to sell at TheStreet Ratings.

Western Digital (WDC) was upgraded to overweight from equal weight at Barclays. $98 12-month price target. Catalysts include increased cash return and MOFCOM granting full approval for Western Digital to integrate its two subsidiaries, Barclays said.

Zimmer ( ZMH) was upgraded to strong buy from hold at Needham. The BMET purchase should add to earnings, and both companies can gain market share in the next year, Needham said.

Editor's note: To see analysts' stock comments and changes to price targets and earnings estimates, go to "Street Notes" which is available only to Real Money subscribers. To find out how to become a subscriber, please click here.

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