The price-to-book (P/B) ratio is a measurement of the company valuation while the Return on Equity (ROE) is a measurement of company efficiency. By comparing companies in the same industries using these 2 indicators, we can identify companies that are being managed efficiently while trading at a low valuation. This chart serves as a tool for us to identify companies that we could pick in the industry. The larger the circle, the higher the market cap is.