United Technologies Corporation (UTC) was an American multinational conglomerate headquartered in Farmington, Connecticut. It merged with the Raytheon Company in April 2020 to form Raytheon Technologies. UTC was composed of three primary business units: Collins Aerospace, Pratt & Whitney, and Carrier. UTC was a Fortune 500 company that ranked 46th in 2019 with $77 billion in annual revenue. UTC was also included in the S&P 100 index, S&P 500 index, and Dow Jones Industrial Average. UTC employed approximately 240,000 people as of December 31, 2019.