Huntington Ingalls is the most dependent company we cover. Its FY2025 10-K puts 99.9% of its revenue, $12.5B, in its "Federal" customer line. The filing describes its customers as "substantially all" U.S. government.
The contract record points to one buyer. In federal fiscal year 2025, the Department of the Navy awarded 84.4% of the company's matched prime contract obligations. Those obligations came to $11.0B, 0.88 times the U.S. government revenue the company reports. Obligations are commitments to pay, not revenue, so the two rarely match exactly.
General Dynamics, which also builds Navy ships, is ranked with the defense primes because a large part of its revenue comes from other businesses.