NEW YORK (TheStreet) -- RATINGS CHANGES

AthenaHealth (ATHN) was downgraded at RBC Capital to underperform from sector perform. Twelve-month price target is $80. Company will likely struggle to achieve its near-term growth targets, RBC Capital said.

Cliffs Natural Resources (CLF) was downgraded at Deutsche Bank to hold from buy. The company determined that the potential to reach an agreement with prospective equity partners will not be possible by the end of 2014, indicating the realization of "worst case scenario." Twelve-month price target was lowered to $10 from $17, Deutsche Bank said.

Denbury (DNR) was downgraded at Barclays to equal-weight. Twelve-month price target is $11. Company cut production guidance and is facing higher costs, Barclays said.

International Business Machines (IBM) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: IBM Ratings Report.

International Paper (IP) was initiated with a market perform rating at Wells Fargo. Company will likely see flat volumes and price in 2015, Wells Fargo said.

Sina (SINA) was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: SINA Ratings Report.

TrueCar (TRUE) was upgraded at RBC Capital Markets upgraded to Outperform from Sector Perform, said RBC. Price target raised to $23 from $18 on solid management execution, incrementally positive recent trends and incremental mitigation of investment risks.

Zoetis (ZTS) was downgraded at William Blair to market perform. Valuation call, as the stock is already factoring in takeover speculation, William Blair said.

Editor's note: To see analysts' stock comments and changes to price targets and earnings estimates, go to "Street Notes", which is available only to Real Money subscribers. To find out how to become a subscriber, please click here.

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This article was written by a staff member of TheStreet.

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