Raytheon Technologies Corp.
Aerospace & DefenseFounded 2020- Updated July 2025
Reviewed by Swet Parvadiya
Last reviewed: July 2025
CorpDigest
Raytheon Technologies Corp.
Company History
Founded 2020 in Arlington, Virginia
Last reviewed: 2025-07-15 · By Swet Parvadiya
Laurence Marshall, Vannevar Bush (who would later become the architect of the U.S. Government's wartime science mobilization), and Charles Smith founded the American Appliance Company with the initial purpose of developing a new type of gas-filled rectifier tube for home radios. Over the following decades, United Aircraft (renamed United Technologies Corporation in 1975) assembled a remarkable portfolio of businesses: Pratt & Whitney engines, Sikorsky helicopters, Hamilton Standard propellers and aerospace systems (eventually becoming Hamilton Sundstrand), Otis elevators, and Carrier air conditioning and refrigeration. Rockwell International's Collins Radio division — a Cedar Rapids, Iowa institution founded by Arthur Collins in 1933 — was spun off as an independent company in 2001 when Rockwell divided its operations.
Laurence Marshall served as President and then Chairman of the company that would become Raytheon Manufacturing Company from its founding in 1922 through the mid-1940s. Under his leadership, the company transitioned from a components supplier to a defense electronics manufacturer of critical strategic importance. Marshall's most consequential decision was committing Raytheon's manufacturing capacity to magnetron production during World War II, a bet that transformed the company's scale, capabilities, and government relationships. He was less successful in navigating the postwar transition to consumer electronics, and the company went through leadership and strategic changes in the late 1940s and 1950s. Marshall's legacy is as the founder of a company that became central to American defense electronics capability, even though the consumer electronics chapter of the company he built proved difficult.
Vannevar Bush's connection to Raytheon's origins is a fascinating footnote to one of the most important scientific careers in American history. As a co-founder of the company that became Raytheon, Bush represented the academic-industrial connection that characterized the early American electronics industry. His subsequent career — as the wartime science czar who coordinated the Manhattan Project, the development of radar systems, and dozens of other wartime research programs — intersected indirectly with Raytheon's own wartime expansion in magnetron production. Bush's famous 1945 report, 'Science — The Endless Frontier,' which laid the intellectual foundation for the National Science Foundation and postwar U.S. Science policy, was written by someone who had seen firsthand, from the founding of Raytheon onward, how scientific knowledge could be translated into industrial and military capability.
Laurence Marshall, Vannevar Bush, and Charles Smith found American Appliance Company in Cambridge, Massachusetts, initially focused on developing a gas-filled rectifier tube for home radios. The rectifier product finds commercial success, allowing the company to attract investors and expand operations.
The company is renamed Raytheon Manufacturing Company, with 'Raytheon' derived from Greek roots meaning 'light from the gods.' The name change reflects the company's growing identity as a manufacturer of radio components and electronic devices beyond its original rectifier product.
Raytheon commits its manufacturing capacity to mass production of the magnetron, the critical component of radar systems. By the war's end, Raytheon will have manufactured approximately 80% of all magnetrons produced in the United States, cementing the company's relationship with the U.S. Defense establishment and transforming its scale.
Raytheon patents the first commercial microwave oven, the Radarange, derived from microwave technology developed for radar applications. The initial commercial Radarange is nearly six feet tall and weighs 750 pounds, reflecting its origins as an industrial application rather than consumer product. The consumer microwave oven business is eventually sold to Amana in 1965.
The Hawk surface-to-air missile system developed by Raytheon becomes operational with U.S. Army air defense units. The Hawk represents Raytheon's successful pivot from radar components to complete guided weapon systems and establishes the company's template for integrated air defense development.
The Patriot Advanced Capability (PAC) missile system, developed by Raytheon, achieves initial operational capability with U.S. Army air defense units. The Patriot system integrates radar, command-and-control, and missile interceptors into a complete air defense battery, representing the most advanced surface-to-air system in the U.S. Inventory.
During Operation Desert Storm, Patriot missile batteries intercept Iraqi Scud ballistic missiles targeting Saudi Arabia and Israel. Televised footage of Patriot intercepts makes the system globally famous and establishes Raytheon as the premier air defense contractor in the Western world, driving significant international procurement interest.
United Technologies Corporation completes its acquisition of Rockwell Collins for approximately $30 billion, one of the largest aerospace acquisitions in history. The combined entity forms Collins Aerospace, uniting UTC's existing aerospace systems businesses with Rockwell Collins's avionics, communications, and mission systems capabilities.
United Technologies Corporation and Raytheon Company complete their merger in April 2020, creating Raytheon Technologies Corporation. The deal closes just weeks before COVID-19 devastates commercial aviation, immediately testing the merger's counter-cyclical strategic logic. Concurrent spinoffs of Carrier Global Corporation and Otis Worldwide Corporation focus the new company on aerospace and defense.
RTX's total backlog surpasses $100 billion for the first time as defense procurement accelerates and commercial aviation begins its recovery. The backlog milestone validates the merger's strategic premise and provides investors with visibility into multi-year revenue streams across both the defense and commercial segments.
RTX Corporation completes its rebranding from Raytheon Technologies in July 2023. In September 2023, the company discloses that powder metal contamination in older Pratt & Whitney GTF engine components requires accelerated inspections, taking a $3 billion charge. The company also completes the spinoffs of Carrier and Otis, becoming a pure-play aerospace and defense company.
RTX reports full-year 2024 revenues of $79.2 billion, a record for the company, driven by strong performance across all four segments. The funded backlog exceeds $215 billion, reflecting surging demand for Patriot interceptors, AMRAAM missiles, and GTF engines as global defense budgets increase and commercial aviation recovers.
United Technologies acquired Cedar Rapids, Iowa-based Rockwell Collins for approximately $30 billion to create a comprehensive aerospace systems supplier with unmatched breadth across avionics, flight management, cabin systems, and military communications. Rockwell Collins had been an independent avionics leader since being spun off from Rockwell International in 2001, with deep relationships at Boeing, Airbus, and the U.S. Military. The combination was designed to create a company with the scale and technology breadth to compete on the next generation of commercial and military aircraft.
United Technologies Corporation merged with Raytheon Company in an all-stock transaction valued at approximately $86 billion at announcement in 2019, creating Raytheon Technologies Corporation. The strategic rationale was to combine UTC's commercial aerospace capabilities — Pratt & Whitney and Collins Aerospace — with Raytheon's defense electronics heritage, creating a company with counter-cyclical resilience and the broadest possible capability set across both commercial and military aerospace markets.
RTX acquired Blue Canyon Technologies, a Colorado-based developer and manufacturer of small satellite buses and spacecraft components, for approximately $230 million in January 2021. The acquisition was designed to establish a position in the rapidly growing small satellite market, which was emerging as strategically important for both commercial space applications and military reconnaissance and communications missions. Blue Canyon's nanosatellite and microsatellite platforms provided RTX with a pathway into programs focused on proliferated low-Earth orbit satellite constellations.
RTX acquired SEAKR Engineering, a Colorado-based manufacturer of advanced space electronics including on-board computers, signal processors, and communications systems for military and commercial satellites, for approximately $325 million in 2021. SEAKR's space-hardened electronics provided RTX with vertically integrated capabilities in the satellite electronics domain that complemented the Blue Canyon satellite bus platform and RTX's broader space sensing and intelligence systems capabilities.
RTX has made multiple smaller technology acquisitions and licensing arrangements in the electronic warfare, radar, and directed energy domains to bolster its technology pipeline for next-generation defense programs. These transactions are aimed at ensuring RTX has access to key technologies in areas including gallium nitride (GaN) semiconductor components for radar, directed energy laser systems, and electronic attack capabilities as the military services invest in contested electromagnetic environment warfare.
The original Raytheon Company was founded in 1922 in Cambridge, Massachusetts by three partners: Laurence K. Marshall, an engineer-entrepreneur; Vannevar Bush, an MIT electrical-engineering professor and one of the most consequential American scientific administrators of the twentieth century; and Charles G. Smith, a chemist and inventor. The original corporate name was the American Appliance Company, but the founders renamed the business Raytheon Manufacturing Company in 1925 after introducing a successful gas-filled rectifier tube called the Raytheon, derived from the Greek words for ray and god. The Raytheon tube allowed home radios to run on household alternating-current power rather than expensive batteries, revolutionizing consumer radio adoption in the late 1920s. The company expanded through the 1930s into other vacuum tubes and electronic components, and during World War II became one of the principal US manufacturers of magnetron tubes used in airborne and shipborne radar. The wartime work brought Raytheon into the nascent radar, missile guidance, and electronic warfare industries that would define its identity for the remainder of the twentieth century. The Cambridge headquarters has been preserved as the heritage location of the original Raytheon, with the modern company having evolved through multiple mergers into the present-day RTX Corporation.
Modern Raytheon Technologies Corporation was formed on April 3, 2020 through the all-stock merger of Raytheon Company and United Technologies Corporation, creating a roughly $74 billion combined company at the time of closing. The merger had been announced in June 2019 and was structured as a merger of equals, with United Technologies shareholders receiving approximately 57 percent and Raytheon shareholders approximately 43 percent of the combined entity. Just before the closing of the Raytheon merger, United Technologies completed the spin-offs of two non-aerospace businesses: Carrier Global Corporation, the heating and air conditioning manufacturer, was spun off in March 2020, and Otis Worldwide Corporation, the elevator and escalator manufacturer, was also spun off in March 2020. The remaining three aerospace and defense businesses that became Raytheon Technologies were Pratt & Whitney commercial and military jet engines, Collins Aerospace which had been formed in 2018 from the merger of UTC Aerospace Systems and Rockwell Collins, and the legacy Raytheon defense business. In June 2023, Raytheon Technologies Corporation announced that it would rename itself RTX Corporation, with the new corporate identity formally adopted in mid-2023. The Raytheon name was retained as one of the three operating business units within RTX, specifically the defense business focused on missiles, missile defense, and effectors.
RTX Corporation, the publicly traded parent formerly known as Raytheon Technologies Corporation, operates through three principal business units. Collins Aerospace is the commercial and military aerospace systems business formed in November 2018 from the combination of UTC Aerospace Systems and the recently acquired Rockwell Collins for $30 billion. Collins Aerospace provides flight controls, avionics, cabin systems, communications, landing gear, oxygen systems, and other systems on virtually every commercial and military aircraft globally, generating approximately $28 billion of fiscal 2024 revenue. Pratt & Whitney is the commercial and military jet engine business, generating approximately $28 billion of fiscal 2024 revenue, with major commercial engine programs including the geared turbofan family powering the Airbus A320neo, A220, and Embraer E2; the V2500 powering legacy A320 and others; and military engines including the F135 powering the F-35 fighter and the F119 powering the F-22. Raytheon, the defense business unit, generates approximately $27 billion of fiscal 2024 revenue from missiles including the Tomahawk, Patriot, AMRAAM, Stinger, SM-6, and LRSO; missile defense systems including SM-3 and Patriot; effectors and air defense; and integrated air and missile defense systems. The three businesses combined generated approximately $79.2 billion of revenue in fiscal 2024.
United Technologies Corporation was a diversified American industrial conglomerate that traced its origins to the 1929 merger of multiple aviation and elevator companies into United Aircraft and Transportation Corporation, later split by antitrust action and reorganized. By the late twentieth century, United Technologies operated four principal businesses: Pratt & Whitney aircraft engines, Carrier heating and air conditioning, Otis elevators and escalators, and UTC Aerospace Systems, plus military helicopter manufacturer Sikorsky which was sold to Lockheed Martin in 2015 for $9 billion. United Technologies executed two major strategic transactions in the 2018 to 2020 period. In November 2018 the company closed the $30 billion acquisition of Rockwell Collins, combining it with UTC Aerospace Systems to form Collins Aerospace. In June 2019 United Technologies announced the merger with Raytheon Company to form Raytheon Technologies. In March 2020 United Technologies spun off Carrier and Otis as independent public companies, returning to a pure-play aerospace and defense focus. The April 2020 Raytheon merger combined the United Technologies aerospace businesses with the Raytheon defense business to create the modern Raytheon Technologies, renamed RTX Corporation in mid-2023. United Technologies shareholders received approximately 57 percent of the combined entity reflecting the larger contribution of the UTC businesses.
RTX Corporation is headquartered in Arlington, Virginia, having moved its corporate headquarters from Waltham, Massachusetts in 2022 to a new campus near the Pentagon and major federal customer offices. The Arlington headquarters supports executive leadership, government relations, and corporate functions, with operating business units retaining their own dedicated headquarters. Collins Aerospace is headquartered in Charlotte, North Carolina at the historic Carrier campus. Pratt & Whitney is headquartered in East Hartford, Connecticut at the historic United Technologies campus. The Raytheon defense business unit is headquartered in Arlington, Virginia, with major missile manufacturing in Tucson, Arizona; integrated defense systems work in Tewksbury and Andover, Massachusetts; and effector facilities in multiple states. RTX as a whole employs approximately 185,000 people across more than 40 countries. Fiscal 2024 revenue was approximately $79.2 billion, with adjusted operating margin in the mid-to-high single digits depending on segment performance. Market capitalization at the end of fiscal 2024 stood at approximately $154 billion. The company is the second-largest US defense and aerospace contractor behind Lockheed Martin, and one of the largest publicly traded industrial companies in the world. Shares trade on the New York Stock Exchange under ticker RTX.