Stifel analyst Jonathan Block said SmileDirectClub bulls will point to the company's Q3 revenue beat and argue that 2019 sales estimates are likely to move higher, while bears will note increased adjusted-EBITDA losses as well as ongoing regulatory overhangs, with few of the questions on either side of the debate likely answered immediately. While the stock likely remains volatile in the near-term, he also believes it is cheap when considering the large long-term opportunity for a $2,000 consumer clear aligner alternative, said Block. He keeps a Buy rating and $19 price target on SmileDirectClub shares.