The PE Buy/Sell Zone feature in Trendlyne's stock overview indicates whether a stock is trading in the Buy or Sell Zone based on its historical price-to-earnings ratio (PE ratio). The PE ratio is a company's stock price to its earnings per share, which can be used to determine whether the stock is overvalued or undervalued. The tool also shows the percentage of time the stock has traded below the current PE level.

For example, Infosys is in the Sell Zone in the screenshot below, because the stock’s P/E is historically lower than the current P/E value. 

Investors can also get a detailed analysis of the days when the stock traded above or below its current PE levels on a standalone or consolidated basis by clicking on the arrow in the top-right corner, as shown below. 

You will be directed to Trendlyne’s ‘Buy or Sell’ tool where you can check whether the stock typically trades above or below its current PE valuation on a standalone or consolidated basis. You can also check this for specific time periods.

For more details on the ‘Buy or Sell Zone’, visit this FAQ section.