
Cancer Genetics Inc. (NASDAQ: CGIX) was started as Buy at Cantor Fitzgerald.
Clean Harbors Inc. (NYSE: CLH) was downgraded to Hold from Buy at KeyBanc Capital Markets.
Coupons.com Inc. (NYSE: COUP) was started as Buy at Bank of America Merrill Lynch, started as Neutral at Goldman Sachs and started as Sector Perform at RBC Capital Markets.
Cullen/Frost Bankers Inc. (NYSE: CFR) was raised to Neutral from Underperform at Sterne Agee.
Extreme Networks Inc. (NASDAQ: EXTR) was started as Buy at Wunderlich.
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Laboratory Corporation of America Holdings (NYSE: LH) was raised to Buy from Neutral at UBS.
Micron Technology Inc. (NASDAQ: MU) was reiterated as Outperform with a $30 price target at Credit Suisse, with an expectation that it will beat earnings estimates.
NVIDIA Corp. (NASDAQ: NVDA) was raised to Outperform from Market Perform at JMP Securities.
Potash Corp. of Saskatchewan Inc. (NYSE: POT) was downgraded to Hold from Buy at Cantor Fitzgerald.
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Splunk Inc. (NASDAQ: SPLK) was started as Outperform at Macquarie.
Stratasys Ltd. (NASDAQ: SSYS) was started with a Buy rating at UBS
3D Systems Corp. (NYSE: DDD) was started with a Neutral rating at UBS.
Tableau Software Inc. (NYSE: DATA) was raised to Outperform from Neutral at Baird; Macquarie started coverage as Neutral.
United Continental Holdings Inc. (NYSE: UAL) was raised to Buy from Neutral at UBS.
Waddell & Reed Financial Inc. (NYSE: WDR) was raised to Buy from Neutral by Goldman Sachs.