Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Ericsson (ERIC) upgraded to Buy from Sell at Goldman with analyst Alexander Duval saying that takeaways from the Mobile World Congress were consistent with stabilization and that capital expenditures trends are improving even as the wireless equipment market remains challenging. The company's new CEO stated he will focus on margins not the top line, added Duval. 2. Orbital ATK (OA) upgraded to Outperform from Market Perform at Cowen with analyst Gautam Khanna saying an "upward re-rating" of the shares is likely after the company's fourth quarter results yielded positives, including a rising backlog, the first CRS 2 order and the nearing of audited SEC filings, Khanna tells investors in a research note. 3. Extraction Oil & Gas (XOG) upgraded to Buy from Neutral at Citi with analyst Robert Morris citing valuation following the recent underperformance of the shares. 4. Himax (HIMX) upgraded to Buy from Neutral at Mizuho with analyst Kevin Wang saying he is more positive on Himax's 2017-2018 outlook given potential DOE orders for 3D sensing on iPhone and a China smartphone DDIC inventory build-up for Himax starting in late February. The analyst expects Himax to be a supplier of 3D sensing on the iPhone8 due to its technical advantages and experiences with DOE based on its wafer level optic manufacturing knowledge. 5. Greif (GEF) upgraded to Market Perform from Underperform at BMO Capital with analyst Mark Wilde saying the company's first quarter results show that its "volume trajectory is improving," while its Rigid Packaging margins.are rebounding. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.