Chicago is good, no doubt, but this just doesn't ring true to me in terms of how companies recruit. First of all, Columbia is a better name than Chicago. Both are good, but in terms of general prestige, which matters. Second of all, if the jobs in Chicago are so good, then UChicago graduates will also be competing with Columbia graduates and everyone else. New York is also a hub for quant trading and research. Having people in the program who can refer you or who have connections is useful, but only to a point. The name of the school is important too.