NEW YORK ( TheStreet) -- CHANGE IN RATINGS Citigroup ( C) downgraded at Raymond James from Strong Buy to Outperform, Raymond James said. Company is leveraged to global economic concerns. Chesapeake Energy ( CHK) upgraded at Argus from Sell to Hold, Argus said. Board changes are positive. Continental Resources ( CLR) upgraded at Jefferies to Buy from Hold, Jefferies said. Reasonable valuation for Williston growth. CIFC ( DFR) upgraded to hold at TheStreet Ratings. Dick's Sporting Goods ( DKS) upgraded at Wells Fargo to Outperform from Market Perform, Wells Fargo said. $52 to $55 valuation range. Multiple catalysts could take numbers higher. Facebook ( FB) rated new Market Outperform at JMP. $37 price target. Only scratched surface in monetizing user base. First Merit ( FMER) downgraded at Baird from Neutral to Underperform, Robert Baird said. $13 price target. Company is leveraged to lower interest rates and a potential U.S. recession. Gentium SpA ( GENT) downgraded to hold at TheStreet Ratings. Groupon ( GRPN) upgraded at Stifel from Sell to Hold, Stifel Nicolaus said. Investors are already discounting potential accounting revisions. JP Morgan ( JPM) downgraded at Raymond James from Strong Buy to Outperform, Raymond James said. CIO incident and macroeconomic issues could hang over the stock. Louisiana Pacific ( LPX) upgraded at TD Securities to Hold from Reduce, TD Securities said. $9.50 price target. Higher near term free cash flow. Nationstar Mortgage Holdings ( NSM) downgraded at Citigroup to Neutral from Buy, Citigroup said. $20 price target. Risk/reward less compelling following ResCap. Northeast Utilities ( NU) upgraded at Deutsche from Hold to Buy, Deutsche Bank said. $39 price target. Company has relatively low regulatory risk and no need for new equity. PulteGroup ( PHM) upgraded at Credit Suisse from Neutral to Outperform, Credit Suisse said. $11 price target. Rising orders should boost margins and improve profitability. Rackspace Hosting ( RAX) downgraded at Jefferies to Hold from Buy, Jefferies said. $54 price target. Reducing rating during OpenStack transition. Sherwin Williams ( SHW) downgraded at BofA to Underperform from Neutral, Bank of America Merrill Lynch said. $122 price target. Valuation leaves little room for error. Southwestern Energy ( SWN) upgraded at Credit Suisse from Underperform to Neutral, Credit Suisse said. $29 price target. Gas market appears poised for recovery.