NEW YORK ( TheStreet) -- CHANGE IN RATINGSAEGON/Transamerica ( AEG) upgraded to buy at TheStreet Ratings. Apollo Global ( APO) upgraded at Goldman to Buy, Goldman Sachs said. Company can deliver solid fee-related earnings growth. $17.50 price target. Blackrock ( BLK) downgraded at Goldman to Neutral, Goldman Sachs said. Valuation call, based on a $203 price target. BioMarin Pharmaceutical ( BMRN) added to TPL at Citigroup. $45 price target. Recent pull back is a good entry point. Blackstone ( BX) upgraded at Goldman to Buy, Goldman Sachs said. $19 price target. Company has solid fundraising potential in real estate and credit markets. Comerica ( CMA) downgraded at Stifel from Hold to Sell, Stifel Nicolaus said. Valuation call. Dell ( DELL) downgraded at Citigroup to Neutral from Buy, Citigroup said. $19 price target. Easy margin expansion is done. Dell downgraded at Needham from Buy to Hold, Needham said. $17 price target. Stock will likely remain rangebound, given near-term growth headwinds. Frontier ( FTR) downgraded at Hudson Square from Buy to Hold, Hudson Square Research said. Dividend cut takes some luster off the stock. Holly Energy ( HEP) downgraded at UBS to Neutral from Buy, UBS said. $64 price target. Valuation call. Human Genome ( HGSI) downgraded at Piper from Overweight to Neutral, Piper Jaffray said. Valuation call, based on an $11 price target. Hibbett Sports ( HIBB) downgraded at Needham from Buy to Hold, Needham said. Valuation call. Kronos ( KRO) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Company could be hurt by higher feedstock ore costs. $23 price target. Medtronic ( MDT) downgraded at Credit Suisse from Outperform to Neutral, Credit Suisse said. $43 price target. Majority of the company's sales are in low-growth areas. Medtronic downgraded at Deutsche from Buy to Hold, Deutsche Bank said. $41 price target. Company faces continued growth headwinds. Newfield Exploration ( NFX) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. $45 price target. Company cut its production guidance. Tesla Motors ( TSLA) rated new Buy at ThinkEquity. $39 price target. Company should continue to execute and remain an industry leader. Urban Outfitters ( URBN) upgraded at BMO to Outperform, BMO Capital said. $36 price target. Visibility is improving for the second half of the year and 2013.