HII lifts shipbuilding revenue outlook as backlog hits $57bn
Huntington Ingalls Industries (HII), America's largest shipbuilder and the US Navy's primary builder of nuclear-powered carriers and submarines, posted second-quarter 2026 revenues of $3.4 billion, up 10.9% year-on-year, and raised its full-year shipbuilding revenue guidance to between $10.2 billion and $10.4 billion. The company's total contract backlog now stands at $57.3 billion, underpinned by $6.7 billion in new contract awards during the quarter alone.
Net earnings for the period reached $208 million, a 36.8% jump from the $152 million recorded in Q2 2025, with diluted earnings per share rising from $3.86 to $5.27. Operating margin improved to 6.1% from 5.3% a year earlier. The company reaffirmed full-year free cash flow guidance of between $500 million and $600 million, though Q2 free cash flow was negative $150 million, a sharp reversal from the $730 million generated in the same period of 2025, driven largely by contract asset build-up as shipbuilding volumes surge.
Carriers, submarines and the unmanned frontier
The Newport News Shipbuilding division, responsible for nuclear-powered aircraft carriers and Virginia-class submarines, was the primary revenue driver, posting $1.85 billion in quarterly revenue, up 15.3%. The division celebrated the opening of a new Carrier Refuelling Overhaul Workcenter and redelivered the Virginia-class submarine USS New Jersey following post-shakedown upgrades. Ingalls Shipbuilding, which handles surface combatants and amphibious vessels, contributed $845 million, up 16.7%, led by higher volumes in amphibious assault ships. The quarter also saw Ingalls awarded a Frigate class lead yard support services contract and begin fabrication of guided missile destroyer John F. Lehman (DDG 137), the seventh Flight III destroyer in its pipeline.
The Mission Technologies division, HII's defence technology and services arm, reported a 3.9% revenue decline to $760 million, attributed to the absence of a favourable non-recurring settlement that inflated Q2 2025 figures. However, segment operating margin surged to 7.2% from 4.6%, and EBITDA margin reached 10.1%. The division's Warfare Systems and Unmanned Systems sub-units grew volume during the period. Notably, the US Navy selected HII's ROMULUS Unmanned Surface Vessel to advance to the evaluation phase of the Medium Unmanned Surface Vessel programme, and HII announced plans for four additional ROMULUS 151 vessels. The company also delivered its first REMUS 130 unmanned underwater vehicle to the US Department of Defence.
Convergence angle: unmanned systems and the defence-tech capital race
The ROMULUS and REMUS milestones are strategically significant beyond a single quarterly filing. The accelerating integration of unmanned surface and underwater vehicles into US naval doctrine represents one of the clearest convergence points between defence procurement and the broader robotics and autonomous-systems investment wave currently attracting capital across multiple sectors.
HII's position as both the physical builder of nuclear platforms and a developer of unmanned systems places it at the intersection of legacy industrial defence and the autonomous-systems layer that allied navies are now treating as a strategic priority. The company's 15% shipbuilding throughput improvement target for 2026 reflects the capacity pressure created by a naval build-up cycle that shows little sign of easing. US defence budgets continue to prioritise maritime dominance amid Indo-Pacific strategic competition, and European NATO members are also expanding surface combatant programmes, creating parallel demand signals.
For cross-sector investors, the combination of a $57.3 billion backlog providing multi-year revenue visibility, an improving margin trajectory, and a growing unmanned systems portfolio positions HII as a proxy for the broader re-armament and autonomous-systems capital cycle. CEO Chris Kastner noted the company is "pleased to increase our top line expectations for the full year while lifting the lower end of our margin expectations," signalling growing operational confidence as throughput improvements take hold.
The key risk to monitor is cash conversion: the swing from $730 million positive free cash flow in Q2 2025 to negative $150 million this quarter reflects the capital intensity of ramping shipbuilding programmes, and investors will watch whether the full-year $500 to $600 million free cash flow target holds as contract assets continue to build.