Barchart’s Top 100 Stocks to Buy are companies whose shares are on a roll. They are often momentum stocks with excellent businesses justifying their pricey valuations to investors. The Bottom 100 Stocks, on the other hand, are businesses whose share prices have gotten hammered in recent weeks and often over the past year. As I combed through both lists for today’s commentary, I wondered what happened to Regis Corp. (RGS). Once upon a time, it traded over $450 (post reverse split) in October 2019. In its 2018 fiscal year (June year-end), it made money, generating $60 million in operating profit…