
American Eagle Outfitters Inc. (NYSE: AEO) was downgraded to Neutral from Buy at Citigroup.
BlackBerry (NASDAQ: BBRY) was downgraded to Underperform from Market Perform at Bernstein just a day after FBR Capital Markets was positive on it; shares are indicated down about 3% early on.
Century Aluminum Co. (NASDAQ: CENX) was downgraded to Underperform from Neutral at BofA/Merrill Lynch; shares are down more than 2%.
Cliffs Natural Resources Inc. (NYSE: CLF) was downgraded to Underperform from Neutral at BofA/Merrill Lynch; shares are down almost 2%.
KLA-Tencor Corp. (NASDAQ: KLAC) was downgraded to Hold from Buy at Stifel Nicolaus.
Novo Nordisk A/S (NYSE: NVO) was downgraded to Underperform from Neutral by BNP Paribas.
Sprint Nextel Corp. (NYSE: S) was downgraded to Neutral from Outperform at Macquarie as the merger saga is becoming more finite; shares are down 3%.
Tetra Tech Inc. (NASDAQ: TTEK) was downgraded to Hold from Buy after an earnings warning by Brean Capital; shares are down 10%.
Read also: Top Analyst Upgrades and Positive Research Calls
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