Cross-referencing help for work project

I work for an investment banking company as an intern. I am prett good with excel...but I am struggling with this one. I could do this a long way, but there is alot of data so I am trying to figure out the most efficient way possible.

I have two lists. One is a master list of the stocks that we cover. The other list contains the ticker symbols of stocks that are contained within a particular fund's portfolio. I need to search within the fund list and cross-reference with the company list and extract the shared names. So essentially, I need to extract the shared items between the two lists. For example, say the company list contains: AATI, ACAD, ACMR, ACOR, ACV, AEIS. And the fund list contains, AAI, ADCT, ADTN, AIRM, ACMR. The common item here is ACMR. I want to be able to run either a macro or some other search function/formula that I can take that shared entry, ACMR, and move it to a new list--or even better, highlight the shared entries in the fund list. (i.e. in the fund list ACMR would be highlighted...indicating that we cover that stock). Thanks.