Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Amicus (FOLD) upgraded to Buy from Neutral at Citi with analyst Mohit Bansal saying in recent months, the expectations on accelerated approval for AT-GAA have come down. 2. CBS (CBS) upgraded to Buy from Neutral at MoffettNathanson. 3. SeaWorld (SEAS) and Six Flags (SIX) upgraded to Outperform from Market Perform at Wells Fargo. 4. Dermira (DERM) upgraded to Market Perform from Underperform at Raymond James. 5. Penn National (PENN) upgraded to Buy from Neutral at Nomura Instinet with analyst Harry Curtis saying he sees "key catalysts" in the form of positive estimate revisions, free cash generation of approximately $3.10 per share this year and $4.50 next, as well as both leverage reduction and share repurchases. 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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