[Undergrad] What do I major in?

I'm a sophomore at a semi-target/target that doesn't offer a business/finance major. I'm fortunate enough to have buyside internships secured over the next two summers, so recruiting isn't as big of a concern as of now. My main issue is deciding what to major in. I've taken a few CS classes, and although I enjoy them, the CS major is incredibly rigorous. I'm definitely interested in the idea of majoring in some combination of economics and the humanities; even if I wouldn't be a CS major, I still would have some strong coding skills. I'm also considering majoring in just pure math. I'm mainly worried that if I won't be as marketable without a STEM major. Thoughts? Thanks!