Key Points A rally in the delivery specialist's shares has become overheated, one analyst believes. This is a key reason he downgraded his recommendation on its stock. 10 stocks we like better than Grab › The stock of Asia-based delivery service Grab Holdings (NASDAQ: GRAB) wasn't being grabbed by scores of American investors on Hump Day. It's likely at least some of these folks were aware that the company was the subject of a recommendation downgrade by an analyst, since its stock sank by nearly 4 ...