Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Seaport Global upgraded PetroQuest (PQ) to Buy and raised its price target to $5 from $4, citing reduced near-term balance sheet concerns and a potential Cotton Valley joint-venture partner by year-end. 2. MKM Partners upgraded Burlington Stores (BURL) to Buy from Neutral and increased its price target to $94 from $73. The analyst said two quarters of comp beats demonstrate strong momentum and sees catalysts for continued comp growth, continued refinement of the offprice model, outsized growth in home and beauty, and gross margin expansion. 3. Credit Suisse upgraded Petrobras (PBR) to Neutral and raised its price target to $8.60 from $2. The analyst believes management can add value through cost and capex cuts, divestments, fuel pricing, and strategic changes. 4. HSBC upgraded Southern Copper (SCCO) to Buy and raised its price target to $31.50 from $27. The analyst believes copper prices have bottomed and expects better production growth, higher by-product commodity prices, increasing free cash flow, and an improving balance sheet. 5. Northcoast upgraded A. Schulman (SHLM) to Buy and established a $30 price target. The analyst said risk/reward is favorable and sees catalysts from the reintroduction of Joe Gingo as CEO and his business plan review. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.