NEW YORK ( TheStreet) -- CHANGE IN RATINGS Cirrus Logic ( CRUS) upgraded at Needham from Buy to Strong Buy, Needham said. $57 price target. Company has strong earnings momentum and boosted guidance. General Motors ( GM) upgraded at Craig-Hallum from Hold to Buy, Craig-Hallum said. $30 price target. North America is strong and Europe could be bottoming. Hyatt ( H) downgraded at Suntrust from Buy to Neutral, Suntrust, Robinson Humphrey said. $42 price target. Company lacks near-term catalysts. HCC Insurance ( HCC) upgraded at KBW from Market Perform to Outperform, Keefe, Bruyette & Woods said. Valuation call, based on a $43 price target. Medidata ( MDSO) upgraded at Piper from Neutral to Overweight, Piper Jaffray said. $54 price target. Company can generate sustainable SaaS growth. Millennial Media ( MM) rated new Neutral at Piper. $18 price target. Valuation call, as the stock is up 40% over the past month. Netflix ( NFLX) downgraded at Oppenheimer from Outperform to Perform, Oppenheimer said. Valuation call, based on an $80 price target. Pricesmart ( PSMT) downgraded at Benchmark from Buy to Hold, Benchmark said. $86 price target, based on valuation. Riverbed ( RVBD) upgraded at Cantor from Hold to Buy, Cantor Fitzgerald said. $24 price target. Opnet acquisition makes strategic sense and the stock is attractive following an 18% selloff. Talisman Energy ( TLM) downgraded at Citi from Buy to Neutral, Citigroup said. New business strategy adds risks to the model. $12.50 price target.