Analyst Upgrades for 3/9/2010... Aetna (NYSE:AET) upgraded to Neutral from Underperform, $36 target, at BofA/Merrill... Biogen Idec (NASDAQ:BIIB) initiated as Buy at Soleil... Cerus (NASDAQ:CERS) upgraded to Outperform from Neutral, $5 target, at RW Baird... Cosan (NYSE:CZZ) initiated as Buy at Citigroup... DexCom (NASDAQ:DXCM) initiated as Buy at Global Hunter... Gentex (NASDAQ:GNTX) reiterated Buy, $27 target, at KeyBanc... Health Net (NYSE:HNT) upgraded to Market Perform, $24 target, at BMO Capital... Jacobs Engineering (NYSE:JEC) upgraded to Buy, $50 target, at BofA/Merrill... MAKO Surgical (NASDAQ:MAKO) reiterated Overweight, target raised to $17 from $14, at Piper Jaffray... Mattel (NYSE:MAT) upgraded to Buy at Citi... Nestle (NASDAQ:NSRGY) upgraded to Overweight at JP Morgan... Novell (NASDAQ:NOVL) initiated as Outperform at Macquarie... Petrohawk Energy (NYSE:HK) upgraded to Outperform from Market Perform, $27-29 target, at Wells Fargo... St. Mary Land (NYSE:SM) upgraded to Outperform from Market Perform, $44-48 target, at Wells Fargo... Texas Instruments (NYSE:TXN) maintained Outperform, price target raised $1 to $34, at FBR... The Buckle (NYSE:BKE) upgraded to Positive from Neutral at Susquehanna... The Travelers (NYSE:TRV) initiated as Buy at Citigroup... Vodafone (NYSE:VOD) upgraded two notches to Outperform from Underperform at BNP Paribas... Warnaco (NYSE:WRC) upgraded to Outperform from Neutral at Credit Suisse... XL Capital (NYSE:XL) initiated as Buy at Citigroup... Yum! (NYSE:YUM) upgraded to Buy, target raised to $44 from $38, at UBS...