Sigma Chi Fraternity | 26,933 followers on LinkedIn. Developing values-based leaders who are committed to the betterment of character, campus and community. | Sigma Chi (Σχ) was founded on June 28, 1855, at Miami University in Oxford, Ohio. It was created by seven men between the ages of 14 to 25 as a literary society. The Fraternity's primary purpose, they believed, was to appreciate, develop and promote the core values of Friendship, Justice and Learning.