BigBear.ai Holdings (BBAI 13.68%) has been a popular artificial intelligence (AI) stock for retail investors over the past year. During that time frame, the stock has risen by more than 370% (returns as of June 27). The company has been securing contracts and adding to its backlog.While its results haven't looked all that impressive, growth investors have often pointed to the backlog as a sign of the strong demand for its AI-powered solutions, which include cybersecurity, predictive intelligence, and digita ...