On The Fly: Analyst Upgrade Summary Today's noteworthy upgrades include: AK Steel upgraded to Buy from Neutral at Nomura... AMD upgraded to Sector Perform from Underperform at Pacific Crest... Atlantic Power upgraded to Market Perform from Underperform at BMO Capital... Basic Energy upgraded to Outperform from Market Perform at Cowen... BorgWarner upgraded to Buy from Hold at Deutsche Bank... CA Technologies upgraded to Overweight from Equal Weight at Barclays... Calumet Specialty Products upgraded to Outperform at Wells Fargo... DHT Holdings upgraded to Buy from Hold at Evercore... Exelon upgraded to Neutral from Sell at Citigroup... Fifth Third Bancorp upgraded to Buy from Neutral at Citigroup... Goldman Sachs upgraded to Outperform from Market Perform at Keefe Bruyette... Helmerich & Payne upgraded to Buy from Neutral at UBS... Hilton upgraded to Buy from Neutral at SunTrust... Hyatt ... (more)