Out of the box, there is no way to automatically expand the display on a CA SDM list page.
However, this can be achieved via a form customization using Web Screen Painter (WSP).
Open one of the list screens (list_XXXX.HTMPL) via WSP.
Enter the following code in the BODY tag of the form
onLoad="javascript:expandAll()"
This will cause the list to always be loaded with the list items expanded by default.
Please note that this since this is a customization, therefore is outside the scope of the standard CA Support provisions.