Fast growing stocks with high insider ownership can be a useful hunting ground when markets are pulled in different directions by energy prices, shifting rate expectations and mixed growth signals. This screener focuses on companies where analysts and management share an optimistic outlook, and where insiders have a meaningful stake alongside you. That combination can be appealing if you want exposure to growth without guessing which way inflation or central banks move next. In this article, you will see 3 of the strongest candidates from the Fast Growing Stocks With High Insider Ownership screener and why they stand out.

On Holding (ONON)

Overview: On Holding is a Zurich based sportswear company that designs and sells premium athletic footwear, apparel and accessories for running, outdoor, tennis, training and everyday use, reaching customers through both wholesale partners and its own retail and e-commerce channels worldwide.

Operations: On Holding currently generates virtually all of its CHF3.1b in revenue from athletic footwear.

Market Cap: CHF12.2b

On Holding attracts interest because it blends a fast growing performance sports brand with a business model that leans heavily on direct to consumer and e-commerce. This structure can support higher margins and tighter control over pricing and customer data. Analysts expect solid earnings and revenue growth, helped by expansion in Asia Pacific and new product categories beyond core running, although the current P/E is well above many peers so the stock already prices in a lot of optimism. Margins are still modest at around 8%, and the company depends on premium pricing, heavy marketing and high profile collaborations, so a shift in consumer tastes or weaker demand could hurt returns. For investors who want growth with meaningful insider alignment and are comfortable with valuation risk, On Holding may merit further research.

On Holding’s premium pricing power and rapidly growing brand story are only half the picture; the real tension is how that optimism stacks up against the current valuation in the DCF valuation analysis for On Holding.

Tesla (TSLA)

Overview: Tesla is an Austin based company that designs and sells electric vehicles, energy storage systems and solar products, supported by software, financing, insurance and charging services across the US, China and other international markets.

Operations: Tesla generates about US$85.4b from its Automotive segment and US$12.4b from Energy Generation and Storage, with sales spread across the US, China and other international markets.

Market Cap: US$1.48t

Tesla attracts attention because it sits at the crossroads of electric vehicles, grid scale energy storage and AI enabled robotics. Most of its revenue and a 3.9% net margin still come from selling cars. Forecasts for earnings and revenue growth are strong, and Q2 2026 deliveries of 480,126 vehicles show how powerful the core franchise can be. However, the stock trades at a rich valuation and recent earnings have declined 36.8% year on year. Regulatory probes into Autopilot and Full Self Driving, share dilution, and heavy dependence on Elon Musk’s execution and reputation add real risk. For investors who want exposure to Tesla’s long term AI, robotaxi and energy story, the key question is how much they are paying for that optionality today.

Tesla’s car margins, AI dreams and energy story are pulling in different directions right now, and the stock’s rich valuation sits in the middle. The analyst forecasts for Tesla lays out where expectations are really concentrated and the one pressure point that could flip the story on its head.

MasTec (MTZ)

Overview: MasTec is a US based engineering and construction company that builds and maintains critical infrastructure such as power lines, renewable energy projects, pipelines, fiber networks, wireless towers, roads and water systems for utilities, communications providers, industrial clients and governments.

Operations: MasTec generates most of its revenue from Clean Energy and Infrastructure at about US$5.1b, Power Delivery at about US$4.3b and Communications at about US$3.5b, with smaller contributions from Pipeline Infrastructure at about US$2.5b and eliminations of about US$79.5m.

Market Cap: US$29.1b

MasTec stands out because it is tied directly to long term themes like grid upgrades, renewable energy build outs, AI driven data center demand and fiber expansion, backed by a record backlog and raised 2026 guidance to US$17.5b in revenue and US$575m in GAAP net income. At the same time, you are dealing with a high P/E, thin 2.9% net margins, heavy investment in people and equipment and reliance on large customers and supportive policy. Any slowdown or project delay could quickly weigh on earnings. If you want to understand how that trade off between strong growth drivers and real execution and regulatory risk could play out in MasTec, the next part of the analysis becomes crucial.

MasTec’s record backlog and raised 2026 guidance hint at something bigger building beneath those thin 2.9% net margins, and the analyst forecasts for MasTec shows where expectations could either compound or abruptly stall.

These three stocks are only a starting point. The full Fast Growing Stocks With High Insider Ownership screen on Simply Wall St has surfaced 1,260 more companies with equally compelling growth and insider ownership stories in the Fast Growing Stocks With High Insider Ownership screener. Use the screener to identify and analyze the exact catalysts and narratives that matter to you so you can focus on the highest conviction ideas instead of sorting through noise.

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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.