@mustadirmahmood,

It is not possible to fix the x-axis to the top of the stockchart while scrolling through other charts in a stockchart as of now. However, you can position an overlayed canvas on top of the first chart and copy the x-axis to the overlayed canvas to achieve your requirement.

Please check this updated JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS