How to add the widget to all stock pages without creating multiple widgets for each stock?

Find this page shown in the image below, you can edit this template page to add content to the virtual page, which will affect all stock pages.

You can use available text shortcodes from the Settings >> Shortcodes page and you can also add the widget to the above template page like below

[mstock id="1059" auto="true"]
The additional attribute auto will match the asset in virtual pages.



Thanks.