Key Takeaways HG, GBX, SIG, CTSH and PAGS screen well for value with low P/S ratios and strong business fundamentals. A P/S ratio under 1 signals investors pay less than $1 for each$1 of revenues, marking a potential bargain. P/S works well for spotting growth plays wherein earnings may be negative, but revenue trends remain strong.Investing in stocks based on valuation metrics is a proven strategy for identifying opportunities with strong upside potential. While the price-to-earnings (P/E) ratio is a po ...