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The world is a dangerous place, creating massive demand for defense armaments and related services and helping fuel revenue growth for the world's largest defense stocks.
Lockheed Martin (LMT -1.35%) is the undisputed titan among defense companies. It's $64.6 billion in defense sales, making it the biggest arms seller in 2024, the fifteenth consecutive year it has held the title.
But Lockheed is hardly alone, and there is a large and growing base of defense contractors worldwide that investors can buy into.
Global defense spending reached an unprecedented $2.77 trillion in 2025, according to the Stockholm International Peace Research Institute (SIPRI), driven by widespread military modernization and shifting international security priorities.
This expanding market is a primary driver of industrial manufacturing, public-private technology transfer, and international trade dynamics. Tracking these expenditures offers critical insight into which nations are prioritizing military procurement and how state funding directly shapes the aerospace and defense sectors.
The United States continues to lead global military expenditures, accounting for $954 billion of the global total.
Industry leaders are soaking up a lot of that revenue. In 2024, the top 10 defense companies in the SIPRI database generated a combined $327 billion in arms revenue.
This concentration of revenue among a handful of top-tier firms highlights significant consolidation in the defense industry, making the financial health and rankings of these companies key indicators of global military supply chains.
The defense sector functions as a specialized, highly regulated sub-industry within the broader industrials sector, driven by government procurement and national security mandates rather than typical consumer market cycles. While it shares core manufacturing, supply chain, and engineering infrastructures with the largest industrials companies, its revenue is uniquely insulated by long-term defense budgets and geopolitical demand.
While global state budgets drive the overall demand in the defense market, a select group of multinational contractors captures the majority of this capital.
As the world's largest defense contractor, Lockheed Martin derives the vast majority of its revenue from military contracts, notably through the F-35 Lightning II stealth fighter program. The company is a dominant force in advanced aeronautics, missile defense systems, and tactical space technologies for the U.S. and its allies.
Formerly Raytheon Technologies, RTX (RTX +0.51%) is a major aerospace and defense conglomerate specializing in advanced electronics, missile defense systems (such as the Patriot system), and precision-guided munitions. The company balances a substantial commercial aviation business alongside its extensive government defense portfolios.
Northrop Grumman (NOC -1.23%) is a premier provider of stealth aircraft, autonomous systems, and aerospace technologies, with a strong focus on major projects such as the B-21 Raider stealth bomber. The company also maintains a massive footprint in cybersecurity, command-and-control systems, and strategic missile defense.
Based in the United Kingdom, BAE Systems (BAESY +0.45%) is Europe's largest defense contractor and a vital player in the global market, particularly through its heavy presence in the U.S. defense supply chain. The firm excels in maritime shipbuilding, armored combat vehicles, and advanced defense electronics.
General Dynamics (GD -1.87%) is a diversified defense giant widely recognized for its land systems, including the M1 Abrams tank, and its marine systems segment, which builds nuclear-powered submarines for the U.S. Navy. Its portfolio also includes highly profitable business aviation (Gulfstream) and extensive defense information technology services.
While universally known for commercial airplanes, Boeing's (BA +0.29%) defense division is a major global supplier of military aircraft, including the F/A-18 Super Hornet, Apache helicopters, and various military transport and refueling planes. The company also plays a critical role in strategic space and missile defense programs.
Rostec is a massive state-owned Russian conglomerate that consolidates hundreds of the country's research and production enterprises, including high-profile entities such as United Aircraft Corporation (manufacturer of Sukhoi and MiG fighters) and Kalashnikov. The organization acts as the primary industrial backbone for Russia’s domestic military procurement and export initiatives.
The Aviation Industry Corporation of China (AVIC) is a state-owned defense giant responsible for developing and manufacturing the entirety of China’s military aircraft, including the J-20 stealth fighter. While it has a growing commercial aviation branch, its primary objective remains the rapid modernization of the People's Liberation Army Air Force.
China Electronics Technology Group Corporation (CETC) is a state-owned enterprise that forms the core of China's military electronics industry. The company specializes in high-tech fields critical to modern electronic warfare, including radar systems, secure communications, command network infrastructure, and cybersecurity defenses.
L3Harris (LHX -0.25%) is an agile aerospace and defense innovator focused on mission-critical technologies across air, land, sea, space, and cyber domains. The company is a primary provider of advanced tactical communications, night vision gear, and electronic warfare systems for global military operations.
Lockheed Martin’s $186 billion backlog stands as a testament to the unique financial fortress that anchors the world’s largest defense contractor. For equity investors navigating macroeconomic volatility, this enormous backlog of unfilled orders underscores why the defense sector operates on a different financial plane than traditional commercial industrials.
While a standard manufacturing or industrial firm depends heavily on short-cycle demand, consumer spending health, and just-in-time inventory turnover, defense primes enjoy a combined backlog of more than $1.3 trillion in future business. This capital buffer reshapes the risk profile of defense equities, effectively turning these legacy contractors into structural infrastructure plays backed by sovereign credit.
The divergence between commercial industrial stocks and defense primes lies primarily in revenue visibility and cyclical immunity. In a typical economic downturn, commercial industrial firms face immediate top-line contraction as corporate clients slash capital expenditures and clear out inventories.
Defense contractors, conversely, operate under multi-year government appropriations that are largely decoupled from standard business cycles. Lockheed’s massive order book locks in over two full years of projected revenue, guaranteeing long-term visibility that few commercial entities can ever replicate. The backlogs act as a massive financial shock absorber.
There are downsides to the government-centric model. While commercial industrials can often expand profit margins rapidly by adjusting prices to mirror real-time inflation and demand, defense primes are frequently constrained by rigid, long-term government contracts and supply chain bottlenecks.
For this reason, the core investment thesis for defense firms centers on volume stability, cash flow predictability, and defensive moat security rather than explosive margin expansion. Defense companies tend to be strong dividend stocks due to their predictable cash flows and habit of returning some of this cash to shareholders.
A shift is underway across Europe as escalating geopolitical anxiety reshapes sovereign balance sheets. According to SIPRI data, defense spending across the eurozone has risen dramatically, more than doubling from approximately $200 billion in 2014 to over $420 billion by 2025.
This massive spending surge is across the board. Germany has accelerated its outlays, surpassing the critical 2% of GDP threshold to reach $114 billion in 2025, while frontline states like Poland and regional powers like France have steadily expanded their fiscal commitments for military readiness.
This rearmament has translated into a windfall for the continent's largest defense contractors. Industrial giants like Germany's Rheinmetall (RNMBY -0.43%) saw consolidated sales skyrocket by 29% to nearly €10 billion in fiscal year 2025, alongside a 36% increase in its order backlog to €63.8 billion. Similarly, multi-domain giants like BAE Systems and Leonardo (FINMY -0.53%) have recorded historic order intakes, driven by demand for ammunition replenishment, advanced air defense systems, and mechanized armor modernization.
For decades, European defense firms operated under the shadow of a post-Cold War "peace dividend," but the current security landscape has guaranteed high-volume production pipelines stretching deep into the next decade.
For defense investors, Europe’s change of heart offers higher growth prospects than those of mature U.S. primes. While dominant American contractors offer exceptional stability, European firms are experiencing explosive, steeper growth trajectories relative to their baseline revenues as nations play catch-up with NATO mandates.