SpaceX wins $4.16B SB-AMTI contract for airborne targeting

SpaceX has secured a $4.16 billion production contract from the US Space Force for SB-AMTI (Space-Based Airborne Moving Target Indicator). Announced May 29, 2026, it is described as SpaceX’s largest single defense contract to date and a major step toward space-based “targeting,” not just passive surveillance. SB-AMTI is intended to deploy a satellite constellation to identify and track moving airborne threats such as aircraft and cruise missiles. The data would feed into the wider US military kill chain. Earlier in April 2026, the Space Force used a multi-vendor approach, awarding initial capability development work to nine vendors; SpaceX’s win indicates its proposal is seen as the fastest and most viable route to field the system. The contract adds to another major SpaceX award announced May 26: a $2.29 billion Space Data Network Backbone deal focused on communications infrastructure across military domains. Together, the two awards bring roughly $6.45 billion in new government defense work in a week, aligning with the 2026 National Defense Strategy’s push for space-based capabilities. For investors, SpaceX is privately held, so there is no direct equity exposure. Still, the headline is that the US government is increasingly awarding large-scale production contracts to commercial space companies, reinforcing momentum toward sensor-to-shooter defense architectures such as Golden Dome. Key keyword: SB-AMTI.