Top Analyst Upgrades and Downgrades (ACC, AAPL, BUD, CLS, CHKP, DLTR, DD, FB, MYGN, NOK, NSC, PVA, SEP, UTHR, WHR, KSU, HIG, ATVI, INTC, TWX)

Source: Jon Ogg
These are some of the top analyst upgrades, downgrades and initiations seen in Wall St. research notes this Wednesday.

American Campus Communities Inc. (NYSE: ACC) raised to Buy at UBS.

Anheuser-Busch InBev S.A. (NYSE: BUD) cut to Sell at Goldman Sachs.

Apple Inc. (NASDAQ: AAPL) reiterated Buy and raised target to $800 at Canaccord Genuity.

Celestica Inc. (NYSE: CLS) cut to Hold at Canaccord Genuity.

Check Point Software Technologies Ltd. (NASDAQ: CHKP) raised to Buy at BofA/ML.

Dollar Tree Inc. (NASDAQ: DLTR) raised to Conviction Buy List at Goldman Sachs.

E.I. du Pont de Nemours and Co. (NYSE: DD) cut to Neutral at JPMorgan.

Facebook Inc. (NASDAQ: FB) raised to Buy at BofA/ML and raised to Buy at Citigroup.

Myriad Genetics Inc. (NASDAQ: MYGN) raised to Buy at BofA/ML.

Nokia Corp. (NYSE: NOK) maintained Underweight at JPMorgan.

Norfolk Southern Co. (NYSE: NSC) cut to Neutral at Citigroup.

Penn Virginia Corp. (NYSE: PVA) started as Neutral at Credit Suisse.

Spectra Energy Partners .L.P (NYSE: SEP) raised to Outperform at Credit Suisse.

United Therapeutics Corp. (NASDAQ: UTHR) cut to Neutral at JPMorgan.

Whirlpool Corp. (NYSE: WHR) raised to Buy at Goldman Sachs.

Credit Suisse is making changes to its US FOCUS LIST: Kansas City Southern (NYSE: KSU), The Hartford Financial Services Group Inc. (NYSE: HIG), Activision Blizzard Inc. (NASDAQ: ATVI); removed Intel Corp. (NASDAQ: INTC) and Time Warner Inc. (NYSE: TWX).