These are some of this Friday’s top analyst upgrades, downgrades and initiations seen from Wall St. research calls.

Apple Inc. (NASDAQ: AAPL) reiterated Outperform and $600 price target by Credit Suisse.

Credit Suisse Group (NYSE: CS) raised to Buy from Neutral at UBS.

Hecla Mining Co. (NYSE: HL) raised to Buy at Global Hunter.

Navistar International Corp. (NYSE: NAV) rose handily on Thursday after activist investor Carl Icahn got his way on the board. Now J.P. Morgan has raised its rating to Overweight from Neutral.

Pandora Media Inc. (NYSE: P) has shuffled the chairs in the C-suite after earnings. Now Pandora has been raised to Overweight from Neutral at Piper Jaffray. Maintained Neutral but raised target to $13 from $10 at Credit Suisse.

Rockwell Automation Inc. (NYSE: ROK) cut to Neutral from Outperform at Credit Suisse.

Skullcandy Inc. (NASDAQ: SKUL) disappointed the street by predicting a loss. Now we have seen three downgrades: cut to Underperform at Raymond James, cut to Underweight at Piper Jaffray and cut to Underperform at D.A. Davidson.

Southwest Airlines Co. (NYSE: LUV) raised to Buy at UBS.

Telefonica S.A. (NYSE: TEF) raised to Neutral at BNP Paribas.

Tiffany & Co. (NYSE: TIF) cut to Sell from Hold at Canaccord Genuity.

Time Warner Inc. (NYSE: TWX) raised to Buy from Hold with $68 target at Argus.

TiVo Inc. (NASDAQ: TIVO) started as Overweight at Piper Jaffray.

Whirlpool Corp. (NYSE: WHR) started as Buy at BofA/Merrill Lynch.

Xilinx Inc. (NASDAQ: XLNX) started as Hold at Argus.

UBS says to hell with Warren Buffett and his “never buy an airline” stance. It says to buy these airlines.

Here are 11 stocks which analysts expect to rise 50% to 100% (or more) over the next year.

BofA/Merrill Lynch has a positive research call saying that the cell phone towers still have a lot of upside left in them.

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