Upgrades
- Madison Square Garden (MSG) upgraded by ISI Group from Hold to Buy
- XL Group (XL) upgraded by Deutsche Bank from Sell to Hold
- Twitter (TWTR) upgraded by Pivotal Research from Sell to Hold
- Buffalo Wild Wings (BWLD) upgraded by RW Baird from Neutral to Outperform
- Wal-Mart de Mexico (WMMVY) upgraded by Barclays from Equal Weight to Overweight
- STMicroelectronics (STM) upgraded by Citigroup from Sell to Neutral
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Downgrades
- Plum Creek Timber (PCL) downgraded by BofA/Merrill from Buy to Neutral
- Twitter (TWTR) downgraded by Nomura from Buy to Neutral
- Twitter (TWTR) downgraded by BofA/Merrill from Buy to Neutral
- Twitter (TWTR) downgraded by Stifel from Hold to Sell
- Wright Medical (WMGI) downgraded by Needham from Strong Buy to Buy
- Armstrong World (AWI) downgraded by Barclays from Overweight to Equal Weight
- Nabors Industries (NBR) downgraded by Wells Fargo from Outperform to Market Perform
- Bunge (BG) downgraded by JPMorgan from Overweight to Neutral
- iRobot (IRBT) downgraded by Susquehanna from Positive to Neutral
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Upgrades & Downgrades provided by Theflyonthewall.com 
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