Hey Josh,
It sounds like you have RCA. If so, clone the "Leads by Source" report and name it whatever you like. Then, click on the Setup tab. There, you will see "Group Leads by Source". Double click that row and you will be able to switch that to Industry. Then, go to the Smart List tab, add the Industry filter, and reference your target industries. That should do it!
Make sure to look at the time parameter and adjust that as needed.