Top Pre-Market Stock Upgrades/Downgrades May 7, 2010

Here is a list of this morning’s top companies upgrades, downgrades, and initiations by brokerage firms. Upgrades: Alcoa (AA) upgraded to Outperform from Perform at BMO Capital Markets Autodesk (ADSK) upgraded to Buy from Hold at ThinkEquity China Automotive Systems (CAAS) upgraded to Buy from Neutral at Merriman Cogent (COGT) upgraded to Neutral from Underweight at JP Morgan Excel Maritime [...]