York Space Systems Inc. (YSS)

York Space Systems Inc. is a U.S.-based space and defense prime contractor that designs, produces, integrates, and operates spacecraft and related software for national security, government, and commercial customers, offering a vertically integrated, full technology stack spanning components, subsystems, spacecraft platforms, ground operations, global downlink, and software-enabled services throughout the entire mission lifecycle. The company's core hardware products are its modular S-CLASS, LX-CLASS, and M-CLASS spacecraft platforms, ranging from 85 kg to approximately 2,000 kg in mass with power capabilities from 2kW to 8kW+, which share substantial hardware and software commonality (roughly 75% hardware and 95% software across platforms) to enable rapid, scalable, low-cost production; it has flown 74 missions, developed 17 products with flight heritage, and logged over four million on-orbit hours. York's proprietary software suite includes flight control, autonomous mission planning, and ground operations tools such as the Multi-Mission Operations Center (M-MOC) and Bastion ground software, supported by a global network of more than 45 ground antennas obtained through its ATLAS Space Operations acquisition, along with capabilities gained from its 2023 acquisition of Emergent Space Technologies and its acquisition of Orbion Space Technology, a systems supplier.

The company primarily serves the U.S. Department of Defense and other governmental entities, generating substantially all of its revenue from defense markets, with key focus areas including missile defense (notably the Golden Dome initiative), counter-space capabilities, space domain awareness, and secure communications; it has delivered satellites for the DoD's Proliferated Warfighter Space Architecture (PWSA) and was the first company to demonstrate Link-16 connectivity from space. York differentiates itself through significantly lower per-satellite pricing (roughly half that of competitors), rapid production capacity (with its 60,000 square foot Potomac facility capable of manufacturing and testing over 1,000 satellites annually), and a recurring revenue model derived from ongoing satellite software, ground antenna usage, operational support, and hardware replacement cycles (with an expected five-to-six-year replacement cycle). As of December 31, 2025, the company reported a backlog of approximately $543 million and 107 spacecraft, has been awarded a position on the Missile Defense Agency's SHIELD IDIQ contract with a $151 billion ceiling, and operates in a global space economy that industry sources project could reach $1.8 trillion by 2035, driven by rising national security and commercial demand for resilient, rapidly deployable satellite architectures.