Amazon (NASDAQ: AMZN) is up 3% on an analyst upgrade.

Lowe's (NYSE: LOW) is off over 3% on weak earnings.

RBS (NYSE: RBS) is off 7%, perhaps on news of potential lawsuits over the Bell Canada (NYSE: BCE) buyout.

Mastec (NYSE: MTZ) is up 11%, perhaps on comments on Cramer.

Douglas A. McIntyre is an editor is an editor at 247wallst.com.

MOST NOTEWORTHY: Refiners, MasTec, Cognos, Forest Labs and Reuters Group were today's noteworthy upgrades:

• Bernstein upgraded shares of Marathon Oil Corporation (NYSE: MRO), Tesoro Corporation (NYSE: TSO), Sunoco Incorporated (NYSE: SUN) and Valero Energy Corporation (NYSE: VLO) to Market Perform from Underperform.
• MasTec Incorporated (NYSE: MTZ) was upgraded to Buy from Accumulate at Think Equity and to Buy from Hold at SMH Capital on valuation following yesterday's sell-off.
• JP Morgan upgraded shares of Cognos Incorporated (NASDAQ: COGN) to Overweight from Neutral citing solid end demand, expanded sales capacity, indications that C8 adoption should see an uptick, and the Applix Inc (NASDAQ: APLX) acquisition.
• Forest Laboratories Inc (NYSE: FRX) was upgraded to Buy from Hold at Jefferies, as the firm believes Forest's victory in the Lexapro patent case eliminates a major overhang and returns the focus to the company's pipeline.
• Lehman upgraded shares of Reuters Group (NASDAQ: RTRSY) to Overweight from Equal Weight to reflect benefits from the company's merger with Thomson Corporation (NYSE: TOC).

OTHER UPGRADES:

• UBS upgraded shares of General Mills Inc (NYSE: GIS) to Buy from Neutral.
• Thornburg Mortgage (NYSE: TMA) was upgraded to Sector Perform from Underperform at RBC Capital Markets.
• CIBC World Markets upgraded EDO Corporation (NYSE: EDO) to Sector Outperformer from Sector Performer.
• Bernstein upgraded shares of Rio Tinto (NYSE: RTP) to Outperform from Market Perform and shares of Anglo American (NASDAQ: AAUK) to Market Perform from Underperform.