For the most part, an overweight rating indicates less about the literal meaning of giving a stock higher weight than a given benchmark. Instead, it's typically used as Wall Street jargon to indicate a positive attitude about a particular stock.
To set an option to automatically refresh PivotTable data when you open your workbook, do the following: 1  Click anywhere in the PivotTable to show the PivotTable Tools on the ribbon. 2  Click Analyze > Options. 3  In the PivotTable Options dialog box, on the Data tab, check the Refresh data when opening the file box.
So clicking any Refresh All button anywhere in Excel essentially completely reloads Power Pivot, refreshes all pivot tables, and updates all workbook data connections. If your Power Pivot data model imports millions of lines of data from an external data source, you may well want to avoid using the Refresh All feature.