After viewing a report, Marketo stores it in your database so that it loads quickly upon your next viewing. Following your first view, reports automatically refresh every 24 hours so that they’re always up-to-date. But you can refresh them manually any time you want.
To see when your report was last updated, hover over the circle-arrow icon in the bottom left corner.
That circle-arrow icon is the refresh button. Simply click on it to get the latest results.
You can also refresh the report by clicking on the Report Actions menu, and selecting Refresh Report.