======What data periods are supported by the scan engine?======

Our Scan Engine allows you to create scans based on daily, weekly, or monthly price bars. However, it doesn't support scans based on intraday (1-minute, 5-minute, etc.) bars. [[:scans|See our Support Center articles about Scanning to learn more about the Scan Engine.]] 

The first data update for the Scan Engine starts a minute after the market opens, 9:31 AM Eastern Time. Because of the vast amount of data during trading hours, our Scan Engine scours through a universe of stocks. As a result, the data used in the scanning systems may be slightly delayed.