Analysts' Actions: ATVI DHI IACI NKE RIMM

NEW YORK (TheStreet) -- CHANGE IN RATINGS

Activision Blizzard (ATVI) was downgraded at Sterne Agee from buy to neutral. Estimates also cut, as Call of Duty sales appear to be slowing, Sterne Agee said.

Charter Communications (CHTR) was initiated with a buy rating at UBS. $83 price target. Benefiting from less telco competition, UBS said.

Rockwell Collins (COL) was downgraded at Oppenheimer to perform from outperform. Valuation looking full, Oppenheimer said.

Cree (CREE) was downgraded at Deutsche Bank from buy to hold. $33 price target. Valuation call, as the stock is up 50% year to date, Deutsche said.

DR Horton (DHI) was upgraded at Compass Point from sell to neutral. $18 price target. Company has limited downside potential from current levels, Compass Point said.

Fairchild Semiconductor (FCS) was initiated with a buy rating at MKM Partners. $16 price target. Consensus underestimating revenue and margin upside, MKM said.

Guess (GES) was upgraded at Piper Jaffray from neutral to overweight. $31 price target. Company is seeing better domestic sales, and business in Europe appears to have bottomed, Piper Jaffray said.

IAC/InterActiveCorp (IACI) was upgraded at Wells Fargo from market perform to outperform. Recent weakness has created an attractive entry point, Wells Fargo said.

Jazz Pharmaceuticals (JAZZ) was initiated with a buy rating at UBS. $64 price target. Visibility into Xyrem's sustainability and EPS growth should drive upside, UBS said.

Carmax (KMX) was upgraded at Goldman Sachs from neutral to buy. $42 price target. Earnings appear to be at an inflection point, Goldman Sachs said.

Nike (NKE) was upgraded at HSBC from neutral to overweight. $112 price target. Company is turning its business around, HSBC said.

ON Semiconductor (ONN) was rated new buy at MKM Partners. $8 price target. See upside to consensus estimates, MKM said.

Plantronics (PLT) was upgraded at JP Morgan from neutral to overweight. Valuation call, as the stock is down 8% year to date, JP Morgan said. $41 price target.

Research In Motion (RIMM) was upgraded at Goldman Sachs from neutral to buy. $16 price target. Risk/reward is attractive ahead of the Blackberry 10 launch, Goldman said.