Twitter Upgraded as Vertical Group Lauds Promotions, New Products Vertical Group upgraded Twitter, citing 'the flow of new brand campaign promotions and product releases.' The shares are higher. Author: Twitter ( TWTR) - Get Report shares rose Wednesday after Vertical Group upgraded the social-media titan to very positive from mixed/positive amid optimism about the company’s growth. “The flow of new brand campaign promotions and product releases, which picked up in the late first quarter, has accelerated further in April and May, boosting Twitter’s year-on-year growth momentum,” wrote Vertical analyst Phil Leggiere. Meanwhile, “[Mobile app promotion] and [direct response] initiatives also make additional tentative progress,” he said.