A stock market screen is commonly referred to as a "stock screener," "stock filter," or "equity scanner." This specialized software tool enables investors and traders to sift through thousands of publicly traded companies across global exchanges by applying specific quantitative and qualitative criteria—such as price, volume, P/E ratio, debt levels, and moving averages. By utilizing pre-set or custom filters, users can quickly isolate specific equities that match their exact trading strategies or fundamental investment parameters.