A stock screener is a tool that investors and traders can use to filter stocks. For example: traders can filter stocks on the basis of price, market capitalization, P/E ratio, dividend yield, 52-week high or low, average volume, and ROI etc.
Traders can also use screener to filter the stocks using technical indicators. For example: stocks based on their 200-day moving average, RSI, MACD etc.
Trader and investor can use multiple numbers of filters.