Today's Upgrades and Downgrades...

These are some of Wednesday’s top analyst upgrades, downgrades, and initiations seen from Wall Street research calls.

American Water Works Company, Inc. (NYSE: AWK) added to Strong Buy List at Zacks.

Bank of America Corporation (NYSE: BAC) Cut to Hold at S&P Capital IQ (late-Tuesday).

Brookfield Infrastructure Partners LP (NYSE: BIP) reinstated as Outperform with $32 target at Credit Suisse.

Caterpillar Inc. (NYSE: CAT) Started as Overweight at Morgan Stanley.

Citigroup, Inc. (NYSE: C) Cut to Hold at S&P Capital IQ (late-Tuesday).

Corn Products International (NYSE: CPO) named Value Stock of the Day at Zacks.

Deere & Co. (NYSE: DE) Started as Underweight at Morgan Stanley.

Diamond Foods, Inc. (NASDAQ: DMND) Cut to Neutral at BofA/ML; Cut to Neutral at Janney.

Encana Corporation (NYSE: ECA) Cut to Neutral at BofA/ML.

Gap Inc. (NYSE: GPS) Raised to positive at Susquehanna.

Government Properties Income Trust (NYSE: GOV) Cut to Neutral at Janney.

Joy Global, Inc. (NASDAQ: JOYG) Started as Equalweight at Morgan Stanley.

J.P. Morgan Chase & Co. (NYSE: JPM) Cut to Hold at S&P Capital IQ (late-Tuesday).

OpenTable, Inc. (NASDAQ: OPEN) Cut to Neutral at BofA/ML; Cut to Market Perform at Morgan Keegan; Raised to Buy at ThinkEquity.

Seaspan Corporation (NYSE: SSW) Cut to Hold at Deutsche Bank.

Texas Roadhouse Inc. (NASDAQ: TXRH) Cut to Neutral at Credit Suisse.

United States Cellular Corporation (NYSE: USM) Cut to Underweight at Morgan Stanley.

Valero Energy Corporation (NYSE: VLO) Reiterated Buy with $35 target at Argus.