Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Cerner (CERN) upgraded to Equal Weight from Underweight at Morgan Stanley. 2. Stratasys (SSYS) upgraded to Buy from Neutral at Citi with analyst Kenneth Wong saying the company's fiscal 2017 targets are achievable following its "strong" second quarter results. The analyst lowered his price target for the shares to $29 from $32. 3. Vantiv (VNTV) upgraded to Buy from Hold at Stifel with analyst John Davis saying the company's acquisition of WorldPay is "transformative" and "a strategic home run." 4. Autohome (ATHM) was upgraded to Buy from Hold at Benchmark and Deutsche Bank. 5. Cubic (CUB) upgraded to Overweight from Neutral at JPMorgan with analyst Mark Strouse citing valuation with the shares down 14% since the third quarter report on August 3. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.