There are certain fields in finance that place a high value on quantitative skills like those acquired by a rigorous math degree.
Stand alone hedge funds and investment banks that engage in sophisticated hedge fund-like strategies (either for their own account - proprietary trading - or for clients) need people who can take large data sets and develop profitable trading algorithms. This typically requires high level math skills and/or software development skills. It probably depends on the firm whether an undergraduate degree suffices or whether more - a graduate level degree of some kind - is required.
One can probably check with Emory’s career counseling office to see whether Wall Street investment banks and hedge funds recruit at Emory.