UChicago vs Duke

I think I have limited down my search to the University of Chicago and Duke. I’m planning on double majoring in math and economics (probably going for the masters in math as I will/should start out in honors analysis). I want to pursue a career in investment banking and so I’m wondering which school is better for my academic interests and for my intended career path. Also, I am not sure if University of Chicago has a Putnam team so if anyone knows about the team there that would be helpful.