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Rocket Lab vs. Firefly Aerospace: Which Stock Is More Attractive?
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Key Takeaways
RKLB expands its space business through satellite launches, spacecraft manufacturing and Neutron development.
FLY develops launch vehicles, lunar landers and orbital vehicles for commercial and defense missions.
FLY strengthens its defense operations as SciTec secures a $1.5 million U.S. Air Force contract expansion.
Rocket Lab Corporation (RKLB - Free Report) and Firefly Aerospace Inc. (FLY - Free Report) are expanding their presence in the commercial space and defense markets, although their businesses differ in scope. Rocket Lab provides launch services, spacecraft components and satellite systems, while Firefly Aerospace develops launch vehicles, lunar landers and orbital vehicles, with its SciTec subsidiary adding defense software and data-processing capabilities.
Increasing investment in space infrastructure and national security programs is creating opportunities for companies offering launch and mission-support capabilities. Rocket Lab is expanding its launch operations to serve satellite deployment requirements, while Firefly Aerospace is developing its space transportation business and strengthening its defense technology operations. Both companies are seeking to capitalize on demand for commercial space services and government-funded missions.
Let’s compare the stocks’ fundamentals to determine which one is the better investment option at present.
The Case for RKLB Stock
Rocket Lab has a diversified business that includes launch services, spacecraft manufacturing, satellite components and space systems. Its Electron rocket serves customers requiring dedicated small-satellite launches, while its spacecraft technologies support a range of commercial and government missions. The company is also developing its Neutron rocket to broaden its launch offerings and serve additional mission requirements.
On Oct. 23, 2026, Rocket Lab completed its 98th Electron launch, carrying three satellites for HawkEye 360 into low Earth orbit. The mission was the company's 19th Electron launch of 2026 and its third dedicated launch for HawkEye 360. The satellites are designed to collect and analyze radio-frequency signals, supporting applications such as maritime monitoring, navigation interference detection and communications analysis. The successful flight demonstrates Rocket Lab's continued launch activity and its ability to help customers deploy satellites for specialized monitoring applications.
The Case for FLY Stock
Firefly Aerospace develops launch vehicles, lunar landers and orbital vehicles for commercial, scientific and national security missions. These capabilities allow the company to participate in satellite launches, lunar exploration and other space transportation activities. Its SciTec subsidiary adds a defense technology business focused on software and data processing for government customers.
In October 2026, Firefly Aerospace announced that SciTec expanded its U.S. Air Force contract to incorporate additional counter unmanned aerial system sensor feeds into the Advanced Battle Management System. The $1.5 million addition increased the contract's total value to $31 million. The project involves expanding a cloud-based system that combines data from different sensors to support military situational awareness and operational decisions. The contract extension illustrates SciTec's ability to expand existing defense programs, while Firefly Aerospace continues to develop its launch and lunar exploration businesses.
How Does the Zacks Consensus Estimate Compare for RKLB & FLY?
The Zacks Consensus Estimate for Rocket Lab’s 2026 sales is pegged at $952.35 million, which indicates a rise of 58.25% from the year-ago number.
Image Source: Zacks Investment Research
The consensus estimate for Firefly Aerospace’s 2026 sales is pegged at $436.60 million, which calls for year-over-year growth of 173.12%.
Image Source: Zacks Investment Research
Debt Position of RKLB & FLY
Debt position is an important financial indicator that reflects a company’s financial stability and ability to manage debt obligations efficiently. Currently, Rocket Lab's debt-to-capital is 0.83%, while Firefly Aerospace’s stands at 2.36%.
Image Source: Zacks Investment Research
RKLB & FLY: Stock Price Performance
Over the past three months, shares of RKLB and FLY have fallen 15.7% and 5.5%, respectively.
Image Source: Zacks Investment Research
Valuation of RKLB & FLY
RKLB shares are trading at a forward 12-month Price/Sales (P/S F12M) multiple of 25.96 compared with FLY’s P/S F12M of 4.72.
Image Source: Zacks Investment Research
Summing Up
Both companies operate across the expanding commercial space and defense industries. Rocket Lab focuses on launch services, spacecraft manufacturing and integrated space systems, while Firefly Aerospace develops launch vehicles, lunar landers and defense technology solutions through its SciTec subsidiary.
Our choice at the moment is Firefly Aerospace, supported by its stronger projected sales growth, better stock price performance and more attractive valuation than Rocket Lab.
View the Zacks #1 Rank List
Image: Bigstock
Rocket Lab vs. Firefly Aerospace: Which Stock Is More Attractive?
Key Takeaways
Rocket Lab Corporation (RKLB - Free Report) and Firefly Aerospace Inc. (FLY - Free Report) are expanding their presence in the commercial space and defense markets, although their businesses differ in scope. Rocket Lab provides launch services, spacecraft components and satellite systems, while Firefly Aerospace develops launch vehicles, lunar landers and orbital vehicles, with its SciTec subsidiary adding defense software and data-processing capabilities.
Increasing investment in space infrastructure and national security programs is creating opportunities for companies offering launch and mission-support capabilities. Rocket Lab is expanding its launch operations to serve satellite deployment requirements, while Firefly Aerospace is developing its space transportation business and strengthening its defense technology operations. Both companies are seeking to capitalize on demand for commercial space services and government-funded missions.
Let’s compare the stocks’ fundamentals to determine which one is the better investment option at present.
The Case for RKLB Stock
Rocket Lab has a diversified business that includes launch services, spacecraft manufacturing, satellite components and space systems. Its Electron rocket serves customers requiring dedicated small-satellite launches, while its spacecraft technologies support a range of commercial and government missions. The company is also developing its Neutron rocket to broaden its launch offerings and serve additional mission requirements.
On Oct. 23, 2026, Rocket Lab completed its 98th Electron launch, carrying three satellites for HawkEye 360 into low Earth orbit. The mission was the company's 19th Electron launch of 2026 and its third dedicated launch for HawkEye 360. The satellites are designed to collect and analyze radio-frequency signals, supporting applications such as maritime monitoring, navigation interference detection and communications analysis. The successful flight demonstrates Rocket Lab's continued launch activity and its ability to help customers deploy satellites for specialized monitoring applications.
The Case for FLY Stock
Firefly Aerospace develops launch vehicles, lunar landers and orbital vehicles for commercial, scientific and national security missions. These capabilities allow the company to participate in satellite launches, lunar exploration and other space transportation activities. Its SciTec subsidiary adds a defense technology business focused on software and data processing for government customers.
In October 2026, Firefly Aerospace announced that SciTec expanded its U.S. Air Force contract to incorporate additional counter unmanned aerial system sensor feeds into the Advanced Battle Management System. The $1.5 million addition increased the contract's total value to $31 million. The project involves expanding a cloud-based system that combines data from different sensors to support military situational awareness and operational decisions. The contract extension illustrates SciTec's ability to expand existing defense programs, while Firefly Aerospace continues to develop its launch and lunar exploration businesses.
How Does the Zacks Consensus Estimate Compare for RKLB & FLY?
The Zacks Consensus Estimate for Rocket Lab’s 2026 sales is pegged at $952.35 million, which indicates a rise of 58.25% from the year-ago number.
Image Source: Zacks Investment Research
The consensus estimate for Firefly Aerospace’s 2026 sales is pegged at $436.60 million, which calls for year-over-year growth of 173.12%.
Image Source: Zacks Investment Research
Debt Position of RKLB & FLY
Debt position is an important financial indicator that reflects a company’s financial stability and ability to manage debt obligations efficiently. Currently, Rocket Lab's debt-to-capital is 0.83%, while Firefly Aerospace’s stands at 2.36%.
Image Source: Zacks Investment Research
RKLB & FLY: Stock Price Performance
Over the past three months, shares of RKLB and FLY have fallen 15.7% and 5.5%, respectively.
Image Source: Zacks Investment Research
Valuation of RKLB & FLY
RKLB shares are trading at a forward 12-month Price/Sales (P/S F12M) multiple of 25.96 compared with FLY’s P/S F12M of 4.72.
Image Source: Zacks Investment Research
Summing Up
Both companies operate across the expanding commercial space and defense industries. Rocket Lab focuses on launch services, spacecraft manufacturing and integrated space systems, while Firefly Aerospace develops launch vehicles, lunar landers and defense technology solutions through its SciTec subsidiary.
Our choice at the moment is Firefly Aerospace, supported by its stronger projected sales growth, better stock price performance and more attractive valuation than Rocket Lab.
Firefly Aerospace currently carries a Zacks Rank #2 (Buy), while Rocket Lab carries a Zacks Rank #3 (Hold) at present. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.