BigBear.ai stock trades for just a fraction of its top rival in the defense tech arena, Palantir Technologies.Over the past few years, investors have witnessed a historic run in the stock market, fueled by unprecedented enthusiasm around artificial intelligence (AI). With the S&P 500 and Nasdaq Composite hovering near record highs, many stocks now trade at frothy valuation levels and appear expensive at first glance.Against this backdrop, defense technology specialist BigBear.ai (BBAI 3.36%) -- which trades ...