Top Analyst Upgrades and Downgrades (ACHN, ATI, AGN, AEO, BBT, BRCM, SCHW, CLNE, GLW, DOW, DD, GNRC, HBAN, IDIX, LRCX, MANU, MRO, MAT, MON, NTRS, SHW, STI, WM, WPRT)

Achillion Pharmaceuticals Inc. (NASDAQ: ACHN) raised to Buy from Underperform with $13 target at BofA/ML.

Allegheny Technologies Inc. (NYSE: ATI) named Bear of the Day at Zacks.

Allergan Inc. (NYSE: AGN) started as Hold at Canaccord Genuity.

American Eagle Outfitters Inc. (NYSE: AEO) named Bull of the Day at Zacks.

BB&T Corp. (NYSE: BBT) cut to Market Perform at Bernstein.

Broadcom Corp. (NASDAQ: BRCM) cut to Market Perform at Wells Fargo.

The Charles Schwab Corp. (NYSE: SCHW) cut to Neutral at Goldman Sachs.

Clean Energy Fuels Corp. (NASDAQ: CLNE) started as Hold at KeyBanc.

Corning Inc. (NYSE: GLW) raised to Buy at Goldman Sachs.

The Dow Chemical Co. (NYSE: DOW) started as Sector Perform at RBC.

E. I. du Pont de Nemours and Co. (NYSE: DD) started as Sector Perform at RBC.

Generac Holdings Inc. (NYSE: GNRC) started as Buy at Canaccord Genuity.

Huntington Bancshares Inc. (NASDAQ: HBAN) cut to Market Perform at Bernstein.

Idenix Pharmaceuticals Inc. (NASDAQ: IDIX) cut to Neutral at BofA/ML.

Lam Research Corp. (NASDAQ: LRCX) cut to Neutral at Citigroup.

Manchester United PLC (NYSE: MANU) maintained Outperform but cut target to $17 at Credit Suisse.

Marathon Oil Corp. (NYSE: MRO) raised to Outperform at Credit Suisse.

Mattel Inc. (NASDAQ: MAT) cut to Hold at Needham.

Monsanto Co. (NYSE: MON) raised to Conviction Buy List at Goldman Sachs.

Northern Trust Corp. (NASDAQ: NTRS) cut to Underperform at Credit Suisse.

The Sherwin-Williams Co. (NYSE: SHW) started as Top Pick at RBC.

SunTrust Banks Inc. (NYSE: STI) cut to Market Perform at Bernstein.

Waste Management Inc. (NYSE: WM) cut to Underweight at JPMorgan.

Westport Innovations Inc. (NASDAQ: WPRT) started as Hold at KeyBanc.

JON C. OGG