Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. General Dynamics (GD) upgraded to Buy from Neutral at Goldman Sachs with analyst Noah Poponak saying the valuation of General Dynamics relative to its defense peers has moved to the low-end of historical ranges. 2. Target (TGT) upgraded to Equal Weight from Underweight at Morgan Stanley with analyst Simeon Gutman citing his view that the 15% pullback in the stock over the past month leaves less near-term downside and that the company "appears to be past peak margin pain." 3. NeoPhotonics (NPTN) upgraded to Buy from Neutral at B. Riley FBR with analyst David Kang saying the company's exposure to Huawei has been "de-risked" following the recent selloff in the shares. 4. United Continental (UAL) upgraded to Overweight from Equal Weight at Morgan Stanley. 5. Jack in the Box (JACK) upgraded to Buy from Hold at Stifel with analyst Chris O'Cull saying the stock's valuation will improve as investors gain confidence in the company's outlook. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.