Catch up on today's top five analyst upgrades with this list compiled by The Fly: 2. Chevron (CVX) upgraded to Overweight from Neutral at Piper Jaffray with analyst Guy Baber saying the company offers "impressive financial resilience and dividend sustainability." 2. Alere (ALR) upgraded to Buy from Neutral at BTIG with analyst Dane Leone saying the 10-K helped to alleviate concerns that material deficiencies exist with the current financial model and is more comfortable with forecasts, and with the $56 price stated within the Abbott (ABT) merger agreement. 3. Buffalo Wild Wings (BWLD) upgraded to Neutral from Underperform at Credit Suisse with analyst Jason West saying the presence of activist investor Marcato could provide a "floor" for the stock and a be a win-win for shareholders. 4. Waste Management (WM) upgraded to Overweight from Sector Weight at KeyBanc with analyst Joe Box saying he believes volumes are undergoing a positive inflection point and that the company's price gains are sustainable. 5. Skyworks (SWKS) upgraded to Outperform from Underperform at CLSA. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.