PB Band is a very practical stock selection technique for investors, which can be used to judge whether the company's stock price is currently overvalued or undervalued. The PB ratio center line of the stock must be set every time the stock is changed because of the program limitation of Tradingview. Usually we use the 5-year median to judge whether the company's stock price has a discount. Not all stocks are suitable for using PB Band, especially cyclical stocks. You can also use ROE to determine whether the company is a cyclical stock.