A method, apparatus, system, and computer program code for controlling a display of dynamic data updates is provided. A scroll position is determined for a viewport. The viewport chronologically displays a sequence of dynamic data within a graphical user interface. Responsive to determining that the scroll position is a top-of-page, a set of data updates is retrieved from a buffer. The sequence of dynamic data displayed in the viewport is updated with the set of data updates. The viewport is updated only when the scroll position is the top-of-page.