With inflation readings, energy prices and central bank signals all pulling at markets, it can help to focus on companies that already have their financial house in order. High return on equity, solid past performance and a sound balance sheet can give a stock more flexibility when costs rise, demand softens, or financing becomes more expensive. This article looks at three stocks from our Solid Balance Sheet and Fundamentals screener that fit that profile. It shows how stronger financial foundations can support resilience and help filter opportunities when conditions are choppy.

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Argan (AGX)

Overview: Argan is an engineering and construction company that builds, commissions, and maintains large power plants and industrial facilities, along with communication and power networks, across the United States, the Republic of Ireland, and the United Kingdom. Through its Power, Industrial, and Teledata segments, it serves utilities, independent power producers, industrial operators, and government-related customers that need complex energy and infrastructure projects delivered and kept running.

Operations: Argan generates most of its US$1.04b revenue from its Power segment at US$822.8m, followed by Industrial at US$196.7m and Teledata at US$22.4m, with the United States contributing US$925.0m of sales and the Republic of Ireland and United Kingdom adding US$79.3m and US$37.7m respectively.

Market Cap: US$8.6b

Investors looking for financially solid infrastructure exposure may find Argan worth a closer look. The company combines a 34.1% return on equity and a 15.5% net margin with a record US$2.9b backlog and no debt, backed by US$974m in cash and investments. This gives it room to handle large projects and shareholder returns through dividends and buybacks. At the same time, the premium P/E multiple, heavy tilt toward gas power projects, reliance on a relatively small number of complex contracts, and recent insider selling mean you need to be comfortable with execution and policy risk. The full story sits where strong fundamentals, ambitious revenue targets, and these real risks all intersect.

Argan’s 34.1% return on equity, hefty cash pile and zero debt raise a bigger question: is this balance sheet strength fully reflected in the price or masking something investors are missing in the DCF valuation analysis for Argan

Arista Networks (ANET)

Overview: Arista Networks builds the high-speed networking hardware and software that connects modern data centers and AI clusters, selling its client to cloud networking solutions to large internet platforms, enterprises, and public sector customers across major global regions.

Operations: Arista generates US$9.7b in revenue entirely from its Computer Networks segment, with most sales in the United States at US$7.8b, followed by Europe, the Middle East and Africa at US$1.1b and Asia Pacific at US$765.5m.

Market Cap: US$191.6b

Arista sits at the heart of AI and cloud data centers, supplying high bandwidth Ethernet networks and software like EOS and CloudVision that large customers depend on to run AI workloads efficiently. The company combines high profitability, with a 27.6% return on equity and a 38.3% net margin, with a debt free balance sheet and strong liquidity. This supports heavy investment in new AI focused platforms such as 1.6 Terabit fabric switches and liquid cooled optics. At the same time, reliance on a handful of hyperscale customers, supply constraints that could pressure margins, insider selling, and a P/E above the wider Communications industry mean expectations are already high and execution has to keep pace with the AI hype.

AI networking momentum is surging, but Arista’s premium P/E and tight hyperscaler reliance leave a lot riding on execution. Read the 3 key rewards and 1 important warning sign and see what might be hiding behind the headline numbers.

Duolingo (DUOL)

Overview: Duolingo runs a mobile learning platform best known for its gamified language app, offering hundreds of courses across major languages, and also provides an online English proficiency exam used by institutions and individuals worldwide.

Operations: Duolingo generates about US$1.10b in revenue from its Educational Software segment.

Market Cap: US$5.5b

Duolingo blends strong fundamentals with a business model that still has room to mature, which has drawn attention from many investors following the recent share price reset. Revenue is growing, margins and return on equity are high, and the company holds over US$1b in cash with no net debt, giving it flexibility to keep investing in AI powered features, new subjects like math and music, and wider user growth. At the same time, forecasts point to earnings declines over the next few years and there has been meaningful insider selling, which raises questions about how durable current profitability is. The tension between a discounted valuation, powerful user engagement and these risks is central to the Duolingo investment narrative.

Duolingo’s high margins, strong cash position and reset share price suggest that the story is still evolving, but the real twist sits in the 3 key rewards and 2 important warning signs (1 is major!)

The three stocks covered here are just a starting point, and the Solid Balance Sheet and Fundamentals screener has surfaced 43 more companies in the Solid Balance Sheet and Fundamentals screener. Use Simply Wall St to identify and analyze the specific catalysts and narratives that matter most to you so you can focus on the highest conviction ideas grounded in return on equity, past performance and balance sheet strength.

Take Control of Your Investment Journey

If Argan or any of these companies have caught your attention, register for FREE with Simply Wall St and add your companies to a Watchlist to monitor the share price against the fair value and track any new developments as they happen. Once you've made your move, manage your holdings with our Portfolio Command Center that filters out the noise to deliver only the most critical, actionable updates. Throughout your journey, our Community allows you to filter the best ideas from thousands of investor perspectives. By uncovering hidden catalysts and risks early, you'll accelerate your decision-making and stay one step ahead of the market.

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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.