Investors seeking to establish meaningful stock positions in valuable companies may be considering American Airlines (AAL)  and Ford Motor (F)  after exceeding their Q3 expectations last Thursday.Of course, the backdrop to why American Airlines and Ford stock could be enticing after their favorable Q3 results is that both are still trading under $15 a share.With their “cheap” stock prices reflecting perceived discounts to other major airliners and automakers, let’s see which may be the better investment, or ...