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[Stock screener](https://prosperse.com) are tools that allow investors and traders to sort through thousands of individual securities to find those that fit their own methodologies. These tools are typically free to use on most brokerage sites and are available on some subscription sites, too. Ticker is the best free stock screener among all the others available. Most screeners available either charge for the services or, even if free, do not provide as much information necessary. Ticker has more than 1200 ratios that an investor can choose from, to filter out the stocks.