Firefly Aerospace vs. Intuitive Machines: Which Space Infrastructure Stock Is a Better Buy in 2026?

The private space race is moving beyond low Earth orbit, leaving investors to determine which companies will successfully monetize the lunar economy. Should you buy Firefly Aerospace (NASDAQ:FLY) or Intuitive Machines (NASDAQ:LUNR) today?

Firefly Aerospace focuses on providing versatile launch and landing services for government and commercial clients. Intuitive Machines positions itself as a critical infrastructure provider, offering spacecraft and data transmission services. Both companies are navigating the capital-intensive aerospace sector, making their financial health and contract pipelines vital for long-term investors.

The case for Firefly Aerospace

Firefly Aerospace operates as a diverse space and defense technology company, competing among defense stocks for high-priority government contracts. It provides launch, landing, and on-orbit services to a variety of customers, including the U.S. Department of Defense's Defense Innovation Unit and NASA. Major commercial partners such as Lockheed Martin Corp. (NYSE:LMT) and Northrop Grumman Corp. (NYSE:NOC) are also key to its growth strategy, though customer concentration like this adds a layer of risk to the business.

In its latest annual report covering FY 2025, revenue reached nearly $160 million, representing an impressive 163% increase over the prior year. Despite this growth, the company reported a net loss of approximately $298 million, with a net margin of negative 187%. The net margin shows how much of each dollar of revenue remains as profit after all expenses, and the negative figure indicates that costs still significantly exceed sales.

As of its December 2025 balance sheet, the debt-to-equity ratio is roughly 0.3x. This ratio compares total debt to shareholder equity to show how a company finances its assets. The so-called current ratio, which measures a company's ability to cover short-term obligations with short-term assets, stands at 4.5x. Free cash flow for the period was negative $237.8 million, which is the cash a company generates after accounting for the money spent on physical assets.

The case for Intuitive Machines

Intuitive Machines builds the spacecraft and communication networks required for sustainable lunar operations. Its strategy involves providing infrastructure-as-a-service to civil and national security customers like NASA and the Space Development Agency. The company recently expanded its reach in the satellite market through the acquisition of Lanteris in early 2026, aiming to offer mission services from low Earth orbit to the Moon.

According to its latest annual report for FY 2025, revenue reached about $210 million, which was an 8% decrease compared to the previous year. The company reported a net loss of about $83.3 million for the same period. Its net margin of negative 40% indicates that expenses continue to outweigh revenue as the company scales its mission frequency, though the loss narrowed compared to previous fiscal years.

As of its December 2025 balance sheet, the debt-to-equity ratio is negative 0.5x. This value means that total liabilities exceed shareholder equity. The current ratio is approximately 5.0x, indicating a strong short-term liquidity position. Free cash flow for FY 2025 was negative $56 million, representing cash from operations minus capital expenditures. Managing these cash outflows is critical as the company integrates recent acquisitions like KinetX.

Risk profile comparison

Firefly Aerospace faces significant revenue concentration, meaning it relies heavily on the stability of government budgets from NASA and the Department of Defense. The inherent operational risks of space systems also mean a single launch failure could damage its reputation and financial standing. Additionally, integrating recent acquisitions like SciTec may divert management's focus from core operations. Intense competition from established aerospace players and new entrants remains a constant pressure on its market share.

Intuitive Machines is also dependent on government spending and the congressional budget process, which can be unpredictable. Scaling its business while integrating new acquisitions like Lanteris and KinetX presents complex operational challenges. The company competes in a crowded market for space infrastructure against rivals like The Boeing Co. (NYSE:BA). Furthermore, its reliance on third-party systems makes it vulnerable to cybersecurity threats and technical failures that could disrupt critical missions.

Valuation comparison

Intuitive Machines appears cheaper based on its P/S ratio, which measures market value against sales over the past twelve months. However, Firefly Aerospace has a much lower Forward P/E, which compares the stock price to future earnings estimates.

Valuation metrics include sourcing from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

Intuitive Machines started fiscal 2026 with its strongest quarter in history, delivering record revenue of $187 million. It then followed that with a second-quarter sales tally of $204 million, more than quadruple the prior year. Management says they have an order backlog of $1.8 billion as of the end of the second quarter, and have 80 spacecraft under contract. NASA is moving toward steady access-to-space flights and deliveries, too, which bodes well for the company's longer-term sales.

Revenue for fiscal 2026 is expected to more than quadruple and possibly touch $1 billion, though higher expenses mean the net loss will probably expand to $100 million. Analysts expect the business to turn post a much narrower net loss in fiscal 2027.

Firefly went public in an initial public offering a year ago at $45 a share. Shares have spent much of the past year below that mark, reflecting typical post-IPO volatility.

More important is the company's recent business success. Firefly Aerospace is the only private company to achieve a successful lunar landing, doing so in March 2025 with its Blue Ghost Mission I. The success of that effort has ingratiated Firefly with NASA, which sent 10 payloads to the Moon with last year's mission. The company now plans annual missions to the Moon to deliver payloads for NASA as part of the agency's goal of constructing a permanent lunar base. Exciting stuff, and considering the attention the SpaceX IPO has been bringing to space businesses, that can only be another positive for Firefly.

While future projections are inherently speculative, Wall Street analysts expect Firefly to top $440 million this year and reach $1 billion in annual revenue in its fiscal 2028.

These are both exciting space infrastructure plays. Firefly's very reasonable forward price-to-earnings ratio gives it the nod here, with Intuitive Machines a few years from recognizing net income. For 2026, space-minded investors would be wise to choose Firefly Aerospace.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Boeing, Firefly Aerospace, Intuitive Machines, Lockheed Martin, and Northrop Grumman. The Motley Fool has a disclosure policy.