Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Micron (MU) upgraded to Buy from Neutral at Longbow with analyst Nikolay Todorov saying his channel checks indicate upside in shipments and improving DRAM and NAND pricing fundamentals. 2. Alliance Data (ADS) upgraded to Buy from Neutral at Goldman Sachs with analyst Ryan Nash saying after peaking at $310 in 2015, shares of Alliance Data are off 57% as the company has "battled a long list of issues," including credit normalization, lower recoveries and retailer struggles leading to slower growth. 3. Alcoa (AA) upgraded to Outperform from Neutral at Credit Suisse with analyst Curt Woodworth saying he expects alumina prices to recover on "significant" capacity cuts in China, an end to inventory destocking, and the Alpart shutdown. 4. Callaway Golf (ELY) upgraded to Outperform from Market Perform at Raymond James with analyst Joseph Altobello citing the firm's sum-of-the-parts base case valuation on Callaway's golf club, ball, apparel and gear business, the Jack Wolfskin business and Callaway's TopGolf investment. 5. Oshkosh (OSK) and Agco (AGCO) upgraded to Overweight from Neutral at JPMorgan. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.