The 84th Grand Conclave, held in Tampa, Fl in July '24, was the largest in Omega history. The link is to the Final Report of this Grand Conclave.
https://oppf.org/download/84th-grand...-report-final/
Similarly, the most recent Undergraduate Summit held Jan 29-Feb 2, 2025 in Atlanta, GA, was the largest in history in terms of registrants: 1000+ (400+ Undergraduates, 600+ Graduates)