At the end of every month, I have a reminder set in my PIM that it is time to take a closer look at this month's high-volume gainers and losers. Why do I do this? Simply put, it enables me to focus my attention on stocks that have simply slipped through the cracks that I might not have noticed otherwise. In this month's review, there are quite a few new names on both lists, which is not all that unusual for a strong rally month. Take a look: