In 1978, Sigma Gamma Chi absorbed Delta Phi Kappa, the fraternity for returned missionaries.

[3] In June 2000, it was announced that the fraternity would be absorbed by the new church organization Institute Men's Association in September 2000.

[5][6] In 2011, the LDS Church closed all groups still operating as fraternities and sororities, replacing the remaining twelve chapters of Sigma Gamma Chi with non-collegiate "young single adult" congregations for Mormons between ages eighteen and thirty.

[7] The Greek Letters Sigma Gamma Chi were selected to stand for "Service to God and Country", the fraternity's motto.

[8][9] The fraternity's six ideals or pillars were spirituality, brotherhood, service, leadership, scholarship, and patriotism.

[9] Members were required to attend an institute class and live according to standards of the LDS Church.