Amazon: Analysts' Upgrades, Downgrades

NEW YORK (TheStreet) -- CHANGE IN RATINGS

Amazon (AMZN Quote) upgraded at Bernstein to Outperform. $160 price target. Estimates still appear to be too conservative.

Canadian Natural Resources (CNQ Quote) upgraded at Barclays to Overweight from Equal Weight after strong 3Q results.

Wolverine World Wide (WWW Quote) upgraded at Citigroup from Hold to Buy. $31 price target. Merrell brand should continue to grow, expanding margins.

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STOCK COMMENTS / EPS CHANGES

AmerisourceBergen (ABC Quote) numbers boosted at Citigroup. Shares now seen reaching $26. Estimates also raised, to reflect higher expected growth rates. Hold rating.

Cardinal Health (CAH Quote) numbers increased at Citigroup. Estimates were raised through 2013. Company is realizing higher earnings. Hold rating and new $31 price target.

CBS (CBS Quote) estimates, target boosted at Goldman. Shares now seen reaching $11. Estimates also raised, to reflect increasing business trends. Neutral rating.

Cigna (CI Quote) estimates boosted at UBS through 2010. Company guided higher, aided by lower operating costs. Buy rating and $36 price target.

CVS (CVS Quote) price target lowered at Barclays to $34 from $37. 2010 EPS cut to $2.82 from $3.00, maintain 2009 at $2.64. Reiterate Overweight rating.

Dr. Pepper Snapple (DPS Quote) estimates increased at Goldman through 2010. Company is buying back stock and realizing lower interest expenses. Buy rating.

DirecTV (DTV Quote) estimates lowered at UBS through 2010. Stricter credit standards cut into U.S. new subscriber growth. Buy rating and $32 price target.

Dynegy (DYN Quote) estimates cut at Barclays. Dropped DYN 2009 and 2010 EPS estimates to -$0.11 and -$0.33, respectively. Reiterate Equal Weight rating and $1.75 price target.