NEW YORK (TheStreet) -- RATINGS CHANGES

Allergan (AGN) - Get Report was upgraded to buy by TheStreet Ratings. You can view the full analysis from the report here: AGN Ratings Report.

Ally Financial (ALLY) - Get Report was upgraded to outperform from neutral by Credit Suisse, which set a $27 price target, saying the company is seeing better loan growth.

Amazon (AMZN) - Get Report was upgraded to buy from hold by Stifel, which set a $700 price target, saying the company is seeing higher growth across the board.

Caterpillar (CAT) - Get Report was downgraded to hold by TheStreet Ratings. You can view the full analysis from the report here: CAT Ratings Report.

CommVault Systems (CVLT) - Get Report was upgraded to buy from hold by Jefferies, which set a $45 price target. Jefferies cited valuation as well as significant optionality around execution improvements, produce cycle and the possibility of activism.

FireEye (FEYE) - Get Report was upgraded to perform from outperform by Oppenheimer, which set a $58 price target, saying that positive checks suggest a clearer path to profitability.

Hibbert Sports (HIBB) - Get Report was upgraded to neutral from underperform by Sterne Agee CRT, which cited valuation, saying the stock has declined to an attractive level.

Immunomedics (IMMU) - Get Report was downgraded to hold from buy by Jefferies, which set a $2 price target, saying that epratuzumab fails in phase three for Lupus.

Radware (RDWR) - Get Report was downgraded to sector perform from outperform by RBC Capital Markets, which set a $20 price target, saying that it is moving to the sidelines on execution concerns.

Scorpio Bulkers (SALT) - Get Report was upgraded to buy from hold by Deutsche Bank, which set a $3 price target, saying that a sentiment shift is coming and downside is limited by excess cash balance.

Sirius XM (SIRI) - Get Report was upgraded to buy from hold by Wunderlich, which set a $4.60 price target, saying that new technology should drive growth.

Stillwater Mining (SWC) was downgraded to underperform from buy by Bank of America/Merrill Lynch, which set a $9.60 price target, saying the company continues to struggle with labor negotiations.

Waters Corp. (WAT) - Get Report was upgraded to outperform from market perform by Wells Fargo, which said the company's biopharma strength is sustainable.

Williams-Sonoma (WSM) - Get Report was upgraded to overweight by JP Morgan, which set a $103 price target, saying the company has good near-term growth visibility.

Yelp (YELP) - Get Report was downgraded to equal-weight from overweight by Morgan Stanley, which set a $25 price target, saying that estimates have also been slashed, as the sales force is not delivering.

Yelp (YELP) - Get Report was downgraded to underperform from neutral by Bank of America/Merrill Lynch, which set a $25 price target, saying that sales will likely remain under pressure.

Yelp (YELP) - Get Report was downgraded to market perform from market outperform by JMP Securities, which kept its $56 price target, citing a mixed second quarter and lower long-term financial projections.

Yelp (YELP) - Get Report was downgraded to hold from buy by Topeka Capital, which set a $30 price target, saying the company is struggling to increase its local sales force.