Here are some key takeaways from analyst coverage of Walmart Inc WMT after the retailer reported upbeat third-quarter sales. Check out other analyst stock ratings.Goldman Sachs: Walmart's US same-store sales grew by 5.3%, tracking better than consensus of 3.9%. This was driven by traffic, up 3.1%, and average ticket size, up 2.1%."WMT saw broad-based strength in the quarter, noting market share gains in the US, both in grocery and general merchandise, with households earning more than $100K accounting for 7 ...