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Weekly Updates

AAII offers weekly and month-end data updates to Stock Investor Pro subscribers. These files are typically available for automatically through the Stock Investor Pro and for download from the Weekly Data Updates section of the Stock Investor area of the AAII Web site by Sunday morning (Central time). You can subscribe to the AAII Stock Investor RSS feed to receive notices when the new weekly update files are available.

The first time you open Stock Investor Pro after installing the program, you will be prompted to log in. The Stock Investor Pro log-in and password are the same log-in and password use for the AAII website.


Each time Stock Investor Pro is opened, the program will connect to our server to check whether there is a data update available. If there is, the program will ask whether you would like to update the data via the following window prompt.


Here are the steps to access, download, and install the weekly data-only updates:

  • Make sure Stock Investor Pro and/or Stock Investor Utilities are not running on your system.
  • Go to the Weekly Data Updates page of the Stock Investor Pro area of AAII.com:


  • At the Weekly Data Updates page, click on either the Full Weekly Update or Partial Weekly Update button to download a weekly update file. If you have a high-speed Internet connection, we strongly encourage you to use the Full Weekly Update. The Partial Weekly Update is offered for those with a dial-up connection. If you experience problems downloading the selected weekly update file, try clicking on the "Secondary Server" link below the respective update button.
  • Depending on the Web browser you are using, you may be prompted to either Run or Save the update file you selected:


If so, we recommend that you first save the file to your computer, preferably your desktop, so you can easily locate the file when the download is complete.

  • When the download process is complete, double-click on the update file you downloaded (the Partial Update is named update.exe and the Full Update is named fullupdate.exe) to launch the update installation wizard. You may receive a security warning:


If so, click Run to continue.

  • Click Next at the Welcome screen of the Stock Investor Setup window:


  • You will be asked to verify the location where Stock Investor is installed on your computer:


  • The final menu window before the installation begins displays a summary of the installation settings you have specified:


If you are satisfied with the settings, click Next to start the installation process.

  • When the update files are successfully installed to your system, you will be prompted to finish the process:


Click Finish to launch Stock Investor Utilities, which will perform a series of database management operations.

  • Lastly, you will asked if you want to recalculate the custom fields:


We strongly recommend you always click Yes to this when installing the program or a data update. Otherwise, the Custom Fields in the program will not reflect the new data you just installed.

  • When the recalculation is complete, the Stock Investor Pro program window will open and you are ready to begin:


To verify the data as of date in Stock Investor, you can click on the Help menu and select About (Help--About). At the bottom of the The About Stock Investor window you will find the monthly and weekly data as of dates: