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 Goldman Sachs with analyst Mark Delaney saying he is now more positive on global memory stocks as he believes that the excess inventory memory companies are carrying will be depleted faster than previous expectations, primarily in NAND flash. 2. PolyOne (POL) upgraded to Outperform from Neutral at Baird. 3. Hershey (HSY) upgraded to Neutral from Sell at UBS with analyst Steven Strycula saying consolidation in U.S. confection has driven better "category stewardship" while pricing power in the space is stronger than initially thought. 4. Autoliv (ALV) upgraded to Buy from Hold at Nordea. 5. StoneCo (STNE) was upgraded to Outperform from Neutral at Credit Suisse while PagSeguro Digital (PAGS) was upgraded to Neutral from Underperform. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.