3 Defense Stocks Worth Watching As Security Risks Return

A foiled plot against RAF Fairford has thrust defence and security back into the spotlight, reminding investors that geopolitical risk never really disappears. When threat levels feel higher, money often seeks out companies tied to protection, intelligence and cyber security. This can reshape where capital flows. This article breaks down three Defence and Security Contractors screener stocks exposed to this news and explains how each might sit in your wider watchlist.

The three stocks highlighted below are only a small sample, with the full screen surfacing 61 more defence and security contractors with equally compelling narratives that are not covered here. To identify and analyze those additional opportunities in one place, head straight to the Defence and Security Contractors screener.

VSE (VSEC)

VSE operates as a behind the scenes partner for defence and security, keeping commercial and military aircraft flying through parts distribution and repair work that supports national fleets.

VSE focuses on aviation aftermarket parts distribution and MRO for commercial and government fleets, with its Aviation segment generating about US$1.36b of revenue. The stock is valued at roughly US$5.69b, which places it in mid cap territory within aerospace and defence.

For investors watching defence-linked aviation, VSE offers a pure-play aftermarket platform where recent scale moves point to a potentially different earnings profile if they progress as planned.

"Significant investments and recent strategic acquisitions (TCI, Kellstrom, Turbine Weld) are expanding VSE's capacity and footprint in higher-growth, higher-margin aftermarket aviation distribution and MRO services, supporting robust future revenue growth and diversification of the customer base."

A key question is what happens to VSE’s margin profile if one less visible cost pressure in that expanding repair network shifts direction.

If that cost pressure really is the swing factor, the full narrative for VSE shows how VSE’s margin story could accelerate and what might cap the upside.

Generac Holdings (GNRC)

Generac Holdings supplies backup power and energy management gear that keeps critical sites running, which links it directly to defence and security resilience where uninterrupted operations at bases, data centers, and infrastructure matter most.

Generac Holdings designs and sells backup generators, battery storage and energy management systems used in homes, businesses and critical facilities worldwide, with about US$3.63b of revenue from the United States and US$870 million from international markets, and a market cap near US$12.29b.

"Accelerating demand for backup power solutions in data centers driven by AI adoption and global digitalization has resulted in a structural supply deficit for large commercial generators; Generac's rapid entry and a backlog of more than US$150 million position it to capture significant revenue growth and operating leverage over the next several years."

What happens if one key assumption about how quickly this new demand wave is matched by production capacity proves too optimistic?

If that timing risk is front of mind, the full narrative for Generac Holdings explains how Generac Holdings could balance backlog, capacity and resilience as demand for backup power accelerates further.

Vicor (VICR)

Vicor supplies high performance power modules that sit deep inside defense, aerospace and other mission critical electronics, with all US$474 million of revenue coming from advanced or brick power products and a roughly US$13b market cap reflecting its role in these specialised systems.

For defence and security minded investors, Vicor ties the screener theme to the surge in power hungry electronics behind radar, satellites and AI enabled command systems, which is where management sees the bigger opportunity building.

"Accelerating adoption of AI data centers and AI factories that require dramatically higher rack power and current densities positions Vicor's second generation vertical power delivery and Gen 5 current multipliers as an enabling technology, supporting sustained double digit revenue growth as designs move into volume production."

What happens to Vicor’s valuation and cash returns if one untested assumption about how quickly customers adopt its licensing model proves wrong?

If that adoption curve is what you are weighing, the full narrative for Vicor sets out how Vicor’s licensing, power technology and defence exposure could be mispriced today.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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