Key Takeaways Five low P/S stocks, AMG, GBX, SIG, CTSH and PAGS, may offer growth at a discount.P/S is a key metric when earnings are volatile, offering clearer insight into a company's valuation.Unlike earnings, sales figures are harder to manipulate, making P/S a reliable value indicator.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 popular tool for gauging value, it has its limit ...