Sigma Phi Epsilon - Iowa Delta

SigEp is the largest National Fraternity in the nation. While this is a claim that several fraternities make, SigEp has the largest active undergraduate membership, not the most chapters or total alumni. The bottom line is that there are more active SigEps in the country than in any other fraternity.
Here at Drake, SigEp is #1. In manpower, grades and athletics, SigEp is leaps and bounds ahead of all other fraternities at Drake.