Top Analyst Upgrades and Downgrades (AMAG, AON, BMY, SCHW, COH, BVN, DF, GPS, HGG, LXK, MRK, KORS, NS, RRGB, TIF, TJX, YHOO)

AMAG Pharmaceuticals Inc. (NASDAQ: AMAG) raised to Neutral at J.P. Morgan.

AON Corp. (NYSE: AON) cut to Neutral at Goldman Sachs.

Bristol-Myers Squibb Co. (NYSE: BMY) cut to Neutral at BofA/Merrill Lynch.

The Charles Schwab Co. (NYSE: SCHW) raised to Outperform at Bernstein.

Coach Inc. (NYSE: COH) started as Buy at Stern Agee.

Compania de Minas Buenaventura (NYSE: BVN) started as Outperform at Credit Suisse.

Dean Foods Co. (NYSE: DF) raised to Buy at KeyBanc.

Gap Inc. (NYSE: GPS) started as Underperform at Stern Agee.

hhgregg Inc. (NYSE: HGG) named as Bear of the Day at Zacks.

Lexmark International Inc. (NYSE: LXK) raised to Equal Weight at Barclays.

Merck & Co. (NYSE: MRK) raised to Buy at BofA/Merrill Lynch.

Michael Kors Holdings Ltd. (NYSE: KORS) started as Neutral at Stern Agee.

NuStar Energy L.P. (NYSE: NS) cut to Underperform at Credit Suisse.

Red Robin Gourmet Burgers Inc. (NASDAQ: RRGB) named Bull of the Day at Zacks.

Tiffany & Co. (NYSE: TIF) started as Neutral at Stern Agee.

TJX Companies Inc. (NYSE: TJX) started as Buy at Stern Agee.

Yahoo! Inc. (NASDAQ: YHOO) raised to Overweight at Barclays.

Deutsche Bank says to buy the eight enduring tech stocks.