Top Analyst Upgrades and Downgrades (ADBE, ABC, AGCO, AAPL, BBY, BBRY, COF, CAH, DE, PM, PLCM, SPRD, SYMC, PAY, WAG, WAC, WFM, ZNGA)

Investors always seem to be looking for new good research-driven investing ideas for stocks to buy and for stocks to sell. Some of these come from independent research shops and some come from the largest sell-side investment banking firms on Wall St. Some even come from boutique firms. These are some of this Wednesday’s top analyst upgrades, downgrades and initiations seen from select Wall St. research calls.

Adobe Systems Inc. (NASDAQ: ADBE) cut to Hold from Buy at Stifel Nicolaus.

AmerisourceBergen Corp. (NYSE: ABC) raised to Buy at Citigroup and maintained Buy but target raised $10 to $60 at Argus.

AGCO Corp. (NYSE: AGCO) cut to Underperform at Wells Fargo.

Apple Inc. (NASDAQ: AAPL) reiterated Outperform with $600 target at Credit Suisse due to iPhone refresh and lower-end iPhone.

Best Buy Co. Inc. (NYSE: BBY) reinstated as Outperform with $30 price target at Credit Suisse.

BlackBerry (NASDAQ: BBRY) raised to Overweight at Morgan Stanley (full summary).

Capital One Financial Corp. (NYSE: COF) reiterated Outperform with $68 target at Oppenheimer.

Cardinal Health Inc. (NYSE: CAH) cut to Neutral at Citigroup.

Deere & Co. (NYSE: DE) cut to Underperform at Wells Fargo.

Philip Morris International Inc. (NYSE: PM) reiterated Buy with $98 price target at Argus.

Polycom Inc. (NASDAQ: PLCM) raised to Buy at Goldman Sachs.

Spreadtrum Communications Inc. (NASDAQ: SPRD) raised to Buy at Jefferies.

Symantec Corp. (NASDAQ: SYMC) cut to Perform at Oppenheimer.

VeriFone Systems Inc. (NYSE: PAY) reiterated as Hold but with negative comments and more questions than answers from Argus.

Walgreen Co. (NYSE: WAG) raised to Buy at Citigroup and raised to Overweight at J.P. Morgan.

Walter Investment Management Corp. (NYSE: WAC) raised to Buy with $45 target after extreme weakness at Stern Agee and maintained Outperform but target cut to $50 from $58 at Credit Suisse.

Whole Foods Market (NASDAQ: WFM) started as Market Perform at Raymond James.

Zynga Inc. (NASDAQ: ZNGA) cut to Neutral at BofA/Merrill Lynch.

Deutsche Bank has a list of key global growth and income stocks to buy now based on strict S&P 500 stock screening tools.

J.P. Morgan gave a list of 15 stocks to buy based on current market conditions.

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