Analysts' Actions: LULU YUM AET AMD BRCM

NEW YORK (TheStreet) -- CHANGE IN RATINGS

Aetna (AET) upgraded at JPMorgan to Overweight from Neutral. $52 price target. Expectation of upwardly revised numbers post CVH deal closing.

Affymetrix (AFFX) downgraded to sell at TheStreet Ratings.

Alexion Pharmaceuticals (ALXN) rated new Neutral at Citi. $104 price target. Will need significant upside to offset P/E contraction.

Allot Communications (ALLT) downgraded to hold at TheStreet Ratings.

American Greetings (AM) downgraded to hold at TheStreet Ratings.

DST Systems (DST) upgraded at Sterne Agee to Buy from Hold, Sterne Agee said. $71 price target. Clear path to monetize non-core assets.

Mid America Apartment Communities (MAA) rated new Hold at KeyBanc. Shares are fairly valued given the company's balanced growth.

Marathon Petroleum (MPC) rated new Neutral at JPmorgan. $62 price target. Attractive exposure to US Mid-Continent.

Melco Crown Entertainment (MPEL) upgraded at JPMorgan to Overweight from Neutral, JPmorgan said. $20 price target. Shares are attractive at current levels.

STOCK COMMENTS / EPS CHANGES

Aecom Technology (ACM) numbers raised at D.A. Davidson. Shares of ACM now seen reaching $27, D.A. Davidson said. Estimates also raised on expected

Advanced Micro Devices (AMD) estimates cut at Oppenheimer through 2012, Oppenheimer said. Draws short straw while amending wafer supply agreement. Perform rating.

Broadcom Corporation (BRCM) estimates raised at D.A. Davidson through 2013, D.A. Davidson said. Positive comments from the analyst day. Buy rating.

salesforce.com (CRM) target raised at Citi. Shares of CRM now seen reaching $190, Citi said. A strong fourth quarter improves outlook. Buy rating.

Ingersoll-Rand (IR) numbers raised at Credit Suisse. Shares of IR now seen reaching $51, Credit Suisse said. Estimates also raised on margin potential. Outperform rating.

lululemon athletica (LULU) numbers raised at Credit Suisse. Shares of LULU now seen reaching $86, Credit Suisse said. Estimates also raised on strong 3Q demand. Outperform rating.

Noble Energy (NBL) numbers raised at UBS. Shares of NBL now seen reaching $126, UBS said. Estimates also increased on higher Marcellus and Niobrara NAVs. Buy rating.

Yum! Brands (YUM) estimates cut at Oppenheimer through 2013, Oppenheimer said. Recent SSS weakness in China. Outperform rating and $82 price target.

YUM! Brands target lowered at Bank of America. Shares of YUM now seen reaching $76, Bank of America said. Softness in China sales. Buy rating.

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