Upgrades
- Groupon (GRPN) upgraded by B. Riley from Neutral to Buy
- Aimco (AIV) upgraded by UBS from Neutral to Buy
- Celadon Group (CGI) upgraded by Stifel from Hold to Buy
- Waddell & Reed (WDR) upgraded by Sterne Agee from Neutral to Buy
- Range Resources (RRC) upgraded by KLR Group from Reduce to Hold
- 3M Company (MMM) upgraded by Argus from Hold to Buy
- Rio Tinto (RIO) upgraded by Barclays from Equal Weight to Overweight
- Guess (GES) upgraded by Piper Jaffray from Neutral to Overweight
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Downgrades
- Erste Group Bank (EBKDY) downgraded by Goldman from Buy to Neutral
- Erste Group Bank (EBKDY) downgraded by Deutsche Bank from Buy to Hold
- Bruker (BRKR) downgraded by ISI Group from Buy to Neutral
- The Fresh Market (TFM) downgraded by Goldman from Neutral to Sell
- Horsehead Holding (ZINC) downgraded by FBR Capital from Outperform to Market Perform
- Vertex (VRTX) downgraded by Oppenheimer from Outperform to Perform
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Upgrades & Downgrades provided by Theflyonthewall.com 
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