The airline merged with UAL Corporation (the parent company of United Airlines) via a stock swap in 2010. Continental's shares were acquired by UAL Corporation; the re-organized holding company was renamed United Continental Holdings. During the integration period, each airline ran a separate operation under the direction of a combined leadership team, based in Chicago. The integration was completed on March 3, 2012. Although the merged airline retained the United name, it uses Continental's operating certificate and livery. On June 27, 2019, United changed its parent company name from United Continental Holdings to United Airlines Holdings.