These are some of the top analyst upgrades, downgrades and initiations seen in Wall St. research calls this Tuesday.

Annaly Capital Management Inc. (NYSE: NLY) maintained Neutral but cut target to $17 at Credit Suisse.

Apartment Investment & Management Co. (NYSE: AIV) raised to Market Perform at Wells Fargo.

Avnet Inc. (NYSE: AVT) cut to Underperform as Bear of the Day at Zacks.

Beam Inc. (NYSE: BEAM) reiterated Buy with $74 target at Argus.

Chipotle Mexican Grill Inc. (NYSE: CMG) raised to Buy but $320 target is same at BofA/ML.

Credit Suisse Group (NYSE: CS) raised to Equal Weight at Barclays.

Diamondback Energy Inc. (NASDAQ: FANG) started as Outperform with $25 target at Credit Suisse and started as Buy at Stern Agee.

Express Scripts Holding Co. (NASDAQ: ESRX) cut to Hold at Jefferies and reiterated Buy at BofA/ML.

Humana Inc. (NYSE: HUM) reiterated Buy with $82 target at Argus.

Kite Realty Group Trust (NYSE: KRG) started as Buy with $6 target at BofA/ML.

L.M. Ericsson Telephone Co. (NASDAQ: ERIC) reiterated Buy with $14 target at Argus.

Republic Airways Holdings Inc. (NASDAQ: RJET) raised to Neutral at BofA/ML.

Responsys Inc. (NASDAQ: MKTG) cut to Neutral at Credit Suisse.

Ross Stores Inc. (NASDAQ: ROST) started as Neutral at Credit Suisse.

Stein Mart Inc. (NASDAQ: SMRT) started as Outperform with $10 target at Credit Suisse.

The TJX Companies Inc. (NYSE: TJX) started as Neutral at Credit Suisse.

UBS A.G. (NYSE: UBS) raised to Overweight at Barclays.

United States Cellular Corp. (NYSE: USM) raised to Neutral at JPMorgan.

JON C. OGG