Key TakeawaysSweetgreen cut its second-quarter losses nearly in half and beat revenue estimates as it added new locations.The salad restaurant chain also had a 9% year-over-year gain in same-store sales.Sweetgreen raised the low end of its full-year outlook on several financial metrics. Sweetgreen (SG) shares skyrocketed Friday, a day after the salad restaurant chain slashed its loss, boosted sales, and raised its guidance as it expanded locations. Sweetgreen posted a second-quarter net loss of $14.5 millio ...