Mechanical investing Definition
Mechanical investing is the selection of stocks for investment using predetermined, numerical criteria. The technique is "mechanical" in that it typically uses a computer to a screen a database of numerical stock data for stocks that currently satisfy the desired criteria, purportedly eliminating subjective criteria and value judgments from the investment decision. Stocks may be subsequently sold, for example, when they no longer satisfy the specified criteria, or after the lapse of a predetermined time period.