NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Advanced Micro ( AMD) downgraded at Oppenheimer from Perform to Underperform. Orders could track lower in the second half of the year.

Ann Taylor Stores ( ANN) upgraded at BofA/Merrill to the US1 List on rebounding female products and valuation. Maintain Buy rating and $30 price target.

Best Buy ( BBY) downgraded at Jefferies from Buy to Hold. $36 price target. Sales trends are eroding further, and the stock could become a value trap.

Costco ( COST) upgraded at UBS from Neutral to Buy. $63 price target. Sales have been strong and recent weakness has created a buying opportunity.

Eaton Vance ( EV) upgraded at JP Morgan. Rating raised to Neutral from Underweight. Price target raised to $30 from $28. 2010 EPS estimates raised to $1.50 from $1.45.

Edwards Lifesciences ( EW) rated new Outperform at William Blair. Company can deliver above-average growth, aided by new products.

Intel ( INTC) downgraded at Oppenheimer from Outperform to Perform. Supply appears to be catching up with demand.

Janus Capital ( JNS) upgraded at JP Morgan. Rating raised to Neutral from Underweight. Price target raised to $9.50 from $8.50. 2010 EPS estimates raised to $0.59 from $0.57.

Marvell Technology ( MRVL) downgraded at Oppenheimer from Outperform to Perform. PC and consumer demand could fall in the second half of the year.

Myriad Genetics ( MYGN) downgraded at JP Morgan. Rating lowered to Neutral from Overweight. Price target lowered to $18 from $28. Maintains 2010 EPS estimates of $1.32.

Norfolk Southern ( NSC) upgraded at JP Morgan. Rating raised to Overweight from Neutral. Maintains $68 price target and 2010 EPS estimates of $3.81.

Stericycle ( SRCL) rated new Buy at Jefferies. $80 price target. Business mix is shifting toward higher-margin accounts.

Texas Instruments ( TXN) upgraded at Oppenheimer from Perform to Outperform. $30 price target. Company is a large-cap defensive play.

STOCK COMMENTS / EPS CHANGES

BJ's Wholesale ( BJS) target increased at UBS to $49. LBO is the most likely outcome, given the presence of an activist investor. Buy rating.

The Buckle ( BKE) estimates reduced at Goldman through 2012. Company is seeing lower sales trends. Sell rating and $25 price target.

Celgene ( CELG) added to Top Picks Live at Citi on valuation and solid Revlimid sales. Maintain Buy rating.

Convergys ( CVG) target lowered at UBS to $11. Macro concerns could weigh on the company's multiple. Neutral rating.

Expedia ( EXPE) cut from Conviction Buy List at Goldman. Google is entering the travel market. Target also lowered to $24.

Google ( GOOG) estimates, target reduced at RBC. Shares of GOOG now seen reaching $600. Estimates also cut, given the company's currency risk.

Hansen Natural ( HANS) target upped at Stifel to $44. Channel checks show better sales trends for Monster energy drinks.

Human Genome Sciences ( HGSI) added to Top Picks Live at Citi on strong expectations for Benlysta, Citigroup said. Maintain Buy rating.

International Speedway ( ISCA) price target cut at Citi to $27 from $29 on lower ticket sales. Maintain Hold rating.

Nordstrom ( JWN) estimates increased at Sterne Agee through 2011. Company is seeing better sales trends. Buy rating and $50 price target.

Time Warner ( TWX) estimates raised at Credit Suisse. TWX 2011 and 2012 EPS estimates increased to $2.64 and $2.94, respectively. Higher ad growth forecasts. Maintain Outperform rating and $37 price target.

Visa ( V) added to Conviction Buy List at Goldman. Company has limited exposure to Europe and relatively high leverage to the growing debit market. $93 price target.

Exxon Mobil ( XOM) estimates raised, target cut at UBS. Shares of XOM now seen reaching $63. On the other hand, estimates were increased, after the closing of the XTO purchase. Neutral rating.
This article was written by a staff member of TheStreet.