United States public
Leidos
LDOSLeidos Holdings is an American defense, aviation, information technology, and biomedical research company with approximately 48,000 employees.
- Headquarters
- Reston, United States
- Founded
- 1969
- Type
- commercial
- Founded
- 1969
- Headquarters
- Reston, United States
- Stage
- Public
- Ownership
- Listed
- Market cap
- $16.0B -12.7% 30d
- Employees
- 47,000 as of 2026
Quick Facts
About Leidos
Leidos Holdings is an American defense, aviation, information technology, and biomedical research company with approximately 48,000 employees. The company's Defense Solutions segment delivers space systems including digital modernization, mission systems integration, C5ISR technologies, and comprehensive space mission support. Leidos supports NASA, the Department of Defense, intelligence agencies, and other government customers with advanced space technologies, satellite systems, and mission-critical operations.
Products and product lines
| Product | Line | Note |
|---|---|---|
| SDA missile-tracking satellite infrared payloads | Missile-warning / tracking satellite sensors | Leidos supplies infrared sensing payloads and onboard signal processing for the Space Development Agency's Tranche 0, 1 and 2 missile-tracking satellites (four Tranche 0 payloads operating on orbit since 2023), and was selected by Sierra Space on August 3, 2026 to provide payloads for 18 Tranche 3 (AMDT3) satellites. |
| Dynetics Human Landing System work | Lunar lander development | Dynetics, acquired by Leidos in January 2020 for about $1.65 billion, was one of three companies (with Blue Origin and SpaceX) awarded NASA funding in 2020 to develop a crewed lunar lander concept for Artemis. |
| NASA Cargo Mission Contract / ISS logistics | Human spaceflight logistics | Leidos performs cargo mission integration and about 1,500 shipments annually for the ISS and NASA Exploration programs, delivering flight hardware, equipment and supplies to launch sites worldwide. |
| Flight Crew Equipment / human spaceflight engineering support | Crewed spaceflight hardware support | Leidos provides engineering development, mission operations and sustaining support for Flight Crew Equipment used by NASA astronauts, alongside Orion and Artemis-related support work. |
Timeline
- 2020 Leidos completes its acquisition of Dynetics for approximately $1.65 billion. [source]
- 2020 NASA selects Dynetics as one of three companies, alongside Blue Origin and SpaceX, to develop a Human Landing System concept for the Artemis program, part of about $253 million in development funding. [source]
- 2023 Thomas (Tom) Bell becomes Leidos Chief Executive Officer effective May 3. [source]
- 2026 The Space Development Agency puts its Accelerated Missile Defense Tranche 3 (AMDT3) Tracking Layer on contract in July, splitting up to $1.75 billion combined between L3Harris and Sierra Space to expand the Proliferated Warfighter Space Architecture toward 190 operational satellites. [source]
- 2026 Sierra Space selects Leidos on August 3 to provide infrared sensing payloads, onboard signal processing and mission support for 18 AMDT3 missile warning and tracking satellites, extending Leidos' role across SDA Tranches 0-3 and supporting the Golden Dome for America initiative. [source]
- 2026 Aerospace America reports that L3Harris and Leidos are scaling up production of infrared sensor payloads for SDA's expanding missile-tracking satellite constellation. [source]
Team
Signals
- Market cap, 90 days
- +19.2%
- Verification
- Verified 2026-09-10
Categories & Capabilities
Industry Categories
Stock Performance
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Frequently asked about Leidos
Quick answers to the questions readers most often search for.
- When was Leidos founded?
- Leidos was founded in 1969 in United States.
- Where is Leidos headquartered?
- Leidos is headquartered in Reston, United States.
- What does Leidos do?
- Leidos Holdings is an American defense, aviation, information technology, and biomedical research company with approximately 48,000 employees. The company's Defense Solutions segment delivers space systems including digital modernization, mission systems integration, C5ISR technologies, and comprehensive space mission …
- Is Leidos publicly traded?
- Yes. Leidos trades under the ticker LDOS on NYSE.
- What sector does Leidos operate in?
- Leidos works in defense and Satellite services.
Data Accuracy Notice: Information about Leidos is compiled from publicly available sources including company websites, press releases, regulatory filings, and industry reports. Data is reviewed periodically but may not reflect the most recent developments.