McKinney-based software company Sigmetrix set to expand with new headquarters The business, founded in 1999, will move to a 5,200-square-foot space at the Valliance Bank Building. Sigmetrix, founded in 1999 in McKinney, will move its headquarters to a larger space within the city.(David Woo / Staff Photographer) McKinney-based software-development company Sigmetrix is expanding its presence in the city. The business has signed a lease on a 5,200-square-foot space at the Valliance Bank Building, 5900 S. Lake Forest Drive, further south down Highway 121 from their current location at 2240 Bush Drive. The move will allow the company, which currently has 29 employees, to hire another possible seven people, according to company officials.