When investors buy stocks on weakness, they purchase securities on dips in the hope that the equities will rebound in the future. Investors try to execute this strategy with names whose pullbacks are overdone or, better yet, completely unjustified. As I've pointed out in past columns, buying stocks on weakness is a way of starting to execute the "buy low, sell high" strategy that is often the key to successful investing. After all, stocks that have dropped meaningfully on price are much more likely to be to ...