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Boeing rose circa 2.5% in after-hours trading, while Northrop Grumman slipped by nearly 5%, so the market is treating the award as a clear relative win for Boeing. Lockheed Martin keeps its F-35 franchise but is shut out of the next generation, which leaves the sector split into a Boeing-led fighter business and Northrop’s bomber and space franchises. Newsquawk commentary cautioned that reactions to awards like this are often muted, because development work has historically been fixed-price and Boeing’s record on such programs includes overruns and charges, so the split between development and later production margins matters. The next signals are defence appropriations and manufacturing execution, given the program’s history of funding fights.
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Boeing’s Navy fighter win lifted its shares and hit Northrop Grumman, handing it both US sixth-generation fighter programs but leaving investors to weigh development-phase margin risk.
Summary:
- The US Navy selected Boeing to lead full-scale development of its F/A-XX carrier-based stealth fighter, a contract valued at more than $20 billion.
- Boeing shares rose circa 2.5% in after-hours trading on Tuesday, September 29, while Northrop Grumman slipped circa 5%, according to Investing.com.
- Boeing beat Northrop for the award and already holds the Air Force’s F-47 contract from March 2025, making it the sole US supplier of sixth-generation fighters, according to Breaking Defense sources.
- Reuters said the program could grow to hundreds of billions of dollars over its life as production ramps up and international customers place orders.
- Lockheed Martin, reportedly eliminated earlier, continues to build the fifth-generation F-35.
- The F/A-XX will replace the Navy’s F/A-18E/F Super Hornet and EA-18G Growler beginning in the 2030s.
Boeing shares rose and Northrop Grumman shares fell after the US Navy selected Boeing to lead development of its next-generation F/A-XX carrier-based stealth fighter, a contract valued at more than $20 billion. According to Investing.com, Boeing climbed circa 2.5% in after-hours trading on Tuesday, September 29, while Northrop Grumman slipped circa 5%. The reaction reflects what was at stake for Northrop, which DefenseScoop noted would have won its first fighter production deal in more than five decades had it prevailed.
Under the contract, Boeing will deliver multiple test aircraft for ground, airworthiness, systems and weapons integration testing. Reuters said the program could grow to hundreds of billions of dollars over its lifetime as production ramps up and, potentially, as international customers place orders. Breaking Defense, citing two sources, reported that the win makes Boeing the sole US supplier of sixth-generation fighters, following its selection in March 2025 to build the Air Force’s F-47. Lockheed Martin, which was reportedly removed from the F/A-XX competition earlier, continues to build the fifth-generation F-35.
The award was announced shortly before the end of the fiscal year, when funding added for the program was due to expire, according to Aviation Week. The Navy also awarded Boeing a contract worth around $17 million on the same day to plan and prepare the shutdown of the F/A-18E/F and EA-18G Growler production lines, aircraft the new fighter is expected to replace from the 2030s. SOFREP has reported that Northrop is the principal subcontractor on parts of the Super Hornet’s fuselage, so it retains some link to Boeing’s existing fighter.
Analyst commentary offered a note of caution on the equity read-through. It said the stock reaction to next-generation platform awards has often been muted relative to headline value because development work has typically been fixed-price, and it pointed to Boeing’s history of cost overruns and charges on fixed-price development programs. Margin risk concentrates in the development phase, while production is where such programs have historically earned their returns.
The decision follows a long delay. The Pentagon moved to freeze the program in June 2025, and the White House later warned that pressing ahead could endanger the F-47. Congress pushed back, adding close to $900 million above the Navy’s request of roughly $75 million for fiscal 2026. The Navy missed a self-imposed August deadline for the award.
Investors will now watch defence appropriations and manufacturing milestones to judge how the program’s financial path develops, along with whether Boeing can run the F/A-XX and F-47 in parallel, a concern that officials raised earlier.
This article was written by Eamonn Sheridan at investinglive.com.
