Welcome to America's foremost professional fraternity for men and women pursuing careers in business.

Delta Sigma Pi is one of the largest co-ed professional business fraternities in the nation and has over 300 active chapters and over 250,000 initiated members. Our Fraternity provides great opportunities for students looking for a head start in the business world.


The Omicron Sigma Chapter is based in sunny La Jolla, California at the University of California, San Diego. Founded in May of 2004, our chapter has seen brothers thrive and grow in brotherhood, leadership, service, and professionalism. Our Alumni network extends from marketing departments to financial planning, and from Disney Pixar to Deloitte.


Since its founding in 1907, Delta Sigma Pi aims to be America’s preeminent professional business fraternity. Part of that founding was to form a brotherhood of people from diverse walks of life, at a time when other organizations excluded certain groups from membership. A great strength of our Fraternity is a membership as diverse as the business world, for which we are preparing our members. We are a mixture of different voices from different backgrounds that challenge fixed ways of thinking and lead us to excellent ideas at both the chapter level and in the business world.





Hello! My name is Rachel Dunton and I am excited to welcome you to the Omicron Sigma chapter of Delta Sigma Pi here at UC San Diego. As the foremost professional co-ed business fraternity in the United States, we embody the four pillars of Professionalism, Brotherhood, Leadership and Service. Since our founding in 1907, we have initiated over 285,000 brothers, as well as, founded 303 chapters and 62 alumni chapters across the world. Our chapter, Omicron Sigma, was founded in 2004 and has continued to be a strong proponent for the business community here at UC San Diego.


When I transferred to UC San Diego I had little professional experience and did not know how to get started in the business world. Delta Sigma Pi gave me a community where I have made friendships that have not only shaped me professionally, but also helped me grow as an individual. The brothers of Delta Sigma Pi have been a pillar of my own success and for that, I am immensely grateful.  I am thankful for all the valuable lessons DSP has taught me and I hope it can also deliver a great experience for you!