Analyst Downgrades for 3/11/2010... Airgas (NYSE:ARG) downgraded to Hold from Buy, $60 target, at Jefferies... Annaly Capital (NYSE:NLY) downgraded to Market Perform from Outperform at JMP Securities... ArcelorMittal (NYSE:MT) downgraded to Hold from Buy at ING Group... ARM Holdings (NASDAQ:ARMH) downgraded to Hold from Buy at RBS... Banc Rhode Island (NASDAQ:BARI) downgraded to Hold from Buy at Stifel... Bed Bath & Beyond (NASDAQ:BBBY) downgraded to Underperform, $38 target, at FBR... CapitalSource (NYSE:CSE) downgraded to Market Perform from Outperform, $6 target, at Keefe Bruyette... Hatteras (NYSE:HTS) downgraded to Market Perform from Outperform at JMP Securities... LUKOIL (NASDAQ:LUKOY) downgraded to Reduce from Neutral, $54 target, at Nomura... Micrus Endovascular (NASDAQ:MEND) downgraded to Hold from Buy at Stifel Nicolaus... Physicians Capital (NASDAQ:ACAP) downgraded to Neutral from Overweight, $35 target, at Piper Jaffray... Psychiatric Solutions (NASDAQ:PSYS) downgraded to Equal Weight from Overweight at Stephens... Sanmina (NASDAQ:SANM) initiated as Hold at Collins Stewart... SkillSoft (NASDAQ:SKIL) downgraded to Market Perform from Outperform at William Blair... SL Green Realty (NYSE:SLG) downgraded to Neutral from Buy at UBS... Stancorp Financial (NYSE:SFG) initiated as Sell at Goldman... Yahoo! (NASDAQ:YHOO) downgraded to Hold, $18 target, at Benchmark...