Defense vs. Aerospace ETFs: What Is the Difference?

By Adam Patti, Chief Executive Officer, VistaShares | Published November 13, 2026

Defense ETFs focus on companies that sell weapons, systems, munitions and services mainly to governments, so their revenue follows military budgets. Aerospace and defense ETFs usually combine those companies with commercial aerospace firms that build aircraft, engines and parts for airlines, whose demand follows air travel and the economy. The difference comes down to the customer: government budgets on one side, commercial aviation on the other.

Attribute	Defense ETFs	Aerospace ETFs
What it holds	Defense contractors and suppliers of weapons, systems, munitions and services	Commercial aircraft, engine and parts makers, often combined with defense companies
Main customer	Governments, especially defense ministries	Airlines and aircraft lessors, plus governments for defense lines
Main revenue driver	Military budgets, procurement and research funding	Air travel demand, aircraft orders and deliveries, aftermarket services
Main risks	Budget changes, contract timing, program cost overruns	Economic cycles, travel shocks, production problems, fuel prices
Sensitivity to the economy	Relatively low; budgets are set politically	Higher; air travel tends to follow economic growth
Costs	Fund expense ratio and trading costs	Fund expense ratio and trading costs
Taxes in general terms	Dividends and gains, as with other equity ETFs	Dividends and gains, as with other equity ETFs
Typical use	Exposure to defense spending cycles	Broader exposure to flight, both military and commercial

What does a defense ETF hold?

A defense ETF holds companies whose revenue comes mainly from military customers. These include prime contractors that integrate aircraft, ships, missiles and vehicles, as well as suppliers of electronics, sensors, propulsion, munitions, communications, cybersecurity and services. Some defense funds also include companies working on newer areas such as drones, space-based systems and autonomous platforms.

Revenue follows government budgets. The U.S. fiscal year 2027 budget request sought about $413.1 billion for procurement, compared with about $219.2 billion enacted for fiscal 2026, and about $343.7 billion for research, development, test and evaluation, within a total request of about $1.45 trillion including mandatory funding.¹ Our article on the U.S. defense budget explains these categories.

What does an aerospace ETF hold?

Most funds labeled aerospace are aerospace and defense funds, following an industry classification that groups both. They hold the defense companies above alongside commercial aerospace companies: aircraft manufacturers, engine makers, parts suppliers, avionics firms and companies that maintain and repair aircraft. Some funds weight commercial aerospace heavily; others are dominated by defense names.

Commercial aerospace revenue follows airline demand. When air travel grows, airlines order new aircraft and fly existing ones more, which raises demand for parts and maintenance. When travel collapses, as it did during the pandemic in 2020, commercial aerospace can be hit hard.

How do the drivers differ?

Defense: budgets are set through political processes and often planned years ahead. Geopolitical tensions, alliance commitments and changes in military strategy shape spending. Contracts can run for many years, and backlogs give some visibility into future revenue. Our article on NATO spending targets covers allied commitments.

Commercial aerospace: demand follows passenger traffic, airline profitability, fuel costs and the replacement cycle for older aircraft. Production rates and supply chain capacity can limit how quickly manufacturers deliver aircraft, which affects revenue timing.

How do the risks differ?

Defense risks: budget uncertainty, including temporary funding measures that delay new contracts; program cancellations; fixed-price contracts that leave companies absorbing cost overruns; and dependence on a few government customers. Export rules and political scrutiny also affect the industry.

Commercial aerospace risks: economic downturns and travel shocks; production and quality problems that slow deliveries; supply chain shortages; and competition between a small number of large manufacturers.

How do they behave in different environments?

Rising defense budgets, steady economy: defense ETFs benefit directly; aerospace and defense ETFs benefit in proportion to their defense weighting.

Recession with steady defense budgets: defense ETFs may hold up relatively well; commercial aerospace exposure may weigh on aerospace ETFs as air travel slows.

Strong travel recovery: commercial aerospace companies may benefit from orders and aftermarket demand; defense-heavy funds see less effect.

How do backlogs and contract types matter?

Both defense and commercial aerospace companies report order backlogs, the value of contracted work not yet delivered, which gives investors a view of future revenue. In defense, backlogs often stretch for years because programs run for decades and governments fund them in stages. In commercial aerospace, backlogs reflect aircraft orders from airlines, which can be deferred or cancelled if travel weakens.

Contract terms also shape risk. Under cost-plus contracts, common in defense research and early production, the government reimburses allowable costs plus a fee, which limits the contractor’s exposure to overruns. Under fixed-price contracts, the contractor agrees to deliver for a set price and absorbs any cost increases, which can hurt margins when inflation or technical problems raise costs. Commercial aerospace companies sell at negotiated prices, often with escalation clauses, and face pressure when input costs rise faster than prices.

For investors comparing funds, the mix of backlog, contract type and customer can matter as much as the label on the fund. A defense fund weighted toward suppliers on fixed-price programs carries different risks from one weighted toward contractors on cost-plus work, and an aerospace fund weighted toward aircraft makers depends heavily on delivery schedules.

How should investors evaluate the funds?

Check the mix: what share of holdings is defense versus commercial aerospace.

Check concentration: a handful of large contractors and manufacturers can dominate either kind of fund.

Check geographic scope: some funds hold only U.S. companies; others include European and Asian defense firms, which follow their own governments’ budgets.

Check the supply chain reach: funds that include component, munitions and electronics suppliers capture more of the spending flow than funds holding only prime contractors. Our article on the defense supply chain explains the tiers.

More thematic articles are in the Thematic ETF Guide.

Frequently asked questions

Are aerospace ETFs the same as defense ETFs?

Not exactly. Many aerospace ETFs are aerospace and defense funds that hold both defense contractors and commercial aircraft companies. Defense ETFs focus on military customers. Checking each fund’s holdings shows how much of each it owns.

Why are defense stocks less tied to the economy?

Defense spending is set by governments through budgets and long-term plans, so it does not rise and fall with consumer demand the way airline orders do. Budgets can still change with politics and priorities, which affects defense companies.

What drives commercial aerospace demand?

Passenger air travel, airline profits, fuel prices and the need to replace older, less efficient aircraft. When airlines grow and modernize fleets, they order more aircraft and parts; when travel falls, orders and maintenance spending fall too.

Do defense ETFs include space and drone companies?

Some do. Definitions vary, and newer defense funds may include companies working on drones, autonomous systems, space-based sensing and cybersecurity alongside traditional contractors. The prospectus and holdings show each fund’s scope.

What is a prime contractor?

A prime contractor holds the main contract with the government for a weapon system or platform and integrates components from many suppliers. Suppliers in lower tiers provide subsystems, parts and materials, and their revenue depends on the programs they support.

How do budget delays affect defense companies?

When budgets are not passed on time, governments often operate under temporary funding that limits new programs and contract awards. That can delay revenue for defense companies, even if overall spending later rises.

Cite this page: Adam Patti, "Defense vs. Aerospace ETFs: What Is the Difference?," VistaShares, updated November 13, 2026, https://www.vistashares.com/defense-vs-aerospace-etfs/. Plain-text version.

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