Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Time Warner (TWX) upgraded to Buy from Neutral at UBS with analyst John Hodulik saying while he expects the takeover by AT&T (T) to receive regulatory approval, he believes the current environment would make Time Warner's assets "highly attractive" to other media companies and Internet-based competitors were the deal to be blocked. 2. Carlyle Group (CG) and Apollo Global (APO) were upgraded to Buy from Neutral at Citi. 3. Merck (MRK) upgraded to Outperform from Market Perform at Leerink with analyst Seamus Fernandez saying Keytruda will continue to dominate the first-line non-small cell lung cancer market. 4. SAP (SAP) upgraded to Outperform from In Line at Evercore ISI with analyst Stewart Materne III saying that he believes the risk/reward is more attractive at current levels following the stock's 6% pullback. 5. Aratana Therapeutics (PETX) upgraded to Buy on valuation at CL King with the firm citing favorable risk/reward. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage,
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