Tetra Tech announced on January 8, 2026 that it has been selected to provide services under the Missile Defense Agency’s (MDA) SHIELD (Scalable Homeland Innovative Enterprise Layered Defense) Multiple‑Award IDIQ contract, a program with a $151 billion ceiling and a 10‑year performance period.
The SHIELD IDIQ is designed to give the MDA and other Department of Defense entities a flexible, enterprise‑wide vehicle that can issue orders rapidly. The contract covers design, integration, and support for homeland defense systems and will leverage artificial intelligence, machine learning, digital engineering, and agile processes to deliver layered protection against a range of threats.
Winning the contract expands Tetra Tech’s federal portfolio into advanced defense engineering and consulting, adding a high‑value, long‑term revenue stream that can be leveraged across its Government Services Group. The award aligns with the company’s strategic focus on defense growth and is expected to increase the Government Services Group’s order backlog while providing a predictable source of revenue that can be cross‑applied to other federal projects.
Tetra Tech’s Q4 2025 results showed revenue growth of 1.6 % year‑over‑year to $1.33 billion, beating estimates. The SHIELD contract is not expected to impact the quarter’s earnings directly, but it is projected to strengthen the company’s long‑term financial position by adding a substantial backlog and reinforcing its presence in the federal market.
Investors reacted positively to the announcement, citing the contract’s size, the long‑term nature of the work, and the company’s recent strong quarterly performance as key drivers of confidence in Tetra Tech’s future growth.
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