NEW YORK ( TheStreet) -- CHANGE IN RATINGS Analog Devices ( ADI) upgraded at Sterne Agee from Neutral to Buy. $42 price target. Stabilizing ISM-PMU in US-China into 1H12. Cliffs Natural Resources ( CLF) rated new Outperform at Credit Suisse. $90 price target. Cheap relative to US metal peers. Community Health Systems ( CYH) rated new Market Perform at BMO Capital Markets. $20 price target. Pressure on hospital fundamentals. Domino's Pizza ( DPZ) rated new Hold at KeyBanc. Limited upside potential near term. Guess ( GES) downgraded at Citigroup from Buy to Neutral, Citigroup said. $33 price target. 3Q came with a double digit drop in its retail comp in Europe. Health Management Associates ( HMA) rated new Market Perform at BMO Capital Markets. $9 price target. Innovation improves outlook but many obstacles remain. Lowe's ( LOW) upgraded at Goldman from Neutral to Buy. $28 price target. Management is embracing the need for meaningful upgrades after years of drift. LifePoint Hospitals ( LPNT) rated new Market Perform at BMO Capital Market. $39 price target. Pointed in the right direction but fully valued. Lululemon ( LULU) upgraded at KeyBanc from Underweight to Buy. $58 price target. Higher in-stock levels will drive sustained profit growth in 2012. PPG Industries ( PPG) downgraded at Goldman from Buy to Neutral. $97 price target. Recent share outperformance. Sun Life Financial ( SLF) upgraded at Morgan Stanley from Underweight to Equal-weight. Meaningful recent underperformance. Tenet Healthcare ( THC) rated new Market Perform at BMO Capital Markets. $5 price target. Current valuation leaves little room for appreciation. Universal Health Services ( UHS) rated new Outperform at BMO Capital Markets. $47 price target. Stronger more diversified earnings engine. Western Refining ( WNR) upgraded at Credit Suisse from Neutral to Outperform, Credit Suisse said. $20.50 target price. Selloff following Seaway pipeline reversal announcement is overdone.