With inflation trends tied to energy prices, shifting central bank expectations and strong signals from areas like semiconductors and commodities, many investors are looking for companies that management teams clearly back with their own capital. Fast growing stocks with high insider ownership can offer that mix. The focus is on companies where analysts see optimistic prospects and insiders have meaningful skin in the game. This article walks through that theme and highlights 3 stocks from the Fast Growing Stocks With High Insider Ownership screener that stand out on growth potential and alignment between management and shareholders.

MasTec (MTZ)

Overview: MasTec is an infrastructure engineering and construction company that designs, builds, installs, and maintains critical assets such as communications networks, renewable power projects, pipelines, and power delivery systems across the United States and Canada.

Market Cap: US$25.7b

MasTec catches the eye because it sits at the center of several powerful trends, from utility grid upgrades and renewables to data centers and AI driven infrastructure, with a record US$21.4b backlog and the recent Superior Group acquisition expanding its reach into mission critical data center projects. Forecast earnings growth above 20% a year and improving margins can appeal to growth focused investors, while high insider ownership can signal alignment with shareholders. At the same time, heavy use of debt, reliance on large projects, and recent margin pressure after Q2 2026 highlight that execution and policy risks are present. The balance of these potential growth drivers and risks is what can make MasTec worth a closer look.

MasTec’s record US$21.4b backlog and high insider ownership hint at a story that could be just getting started, yet the real twist may lie in how analysts frame the road ahead in the analyst forecasts for MasTec

Corcept Therapeutics (CORT)

Overview: Corcept Therapeutics is a biopharmaceutical company that develops and sells drugs that modulate cortisol, focusing on hard to treat endocrine, oncologic, metabolic, and neurologic conditions, led by its approved Cushing’s syndrome treatment Korlym and a pipeline of selective cortisol modulators such as relacorilant and miricorilant.

Market Cap: US$12.8b

Corcept Therapeutics sits at an interesting crossroads for growth focused investors. The company is expanding beyond its core Korlym franchise with Lifyorli in ovarian cancer and a late stage relacorilant program in Cushing’s, backed by strong trial data and a growing commercial footprint. Analysts see rapid revenue and earnings expansion, with forecast revenue growth outpacing the wider US market and a sharp improvement in return on equity. However, the stock already trades on a rich P/S multiple that reflects high expectations. Heavy dependence on cortisol based therapies, ongoing litigation around Korlym, and regulatory risk around future approvals mean setbacks could hit both growth and valuation. The real question is how that trade off looks once you examine the full risk and reward picture around Corcept.

Corcept Therapeutics appears to be a growth story that many investors are only half pricing in, with cortisol science, new indications and valuation debates all intersecting. The real surprise sits inside the 1 key reward and 1 important warning sign

AppLovin (APP)

Overview: AppLovin runs an AI powered advertising platform that helps app developers, brands, and content owners find audiences and make more money from their apps and streaming content. Its tools span mobile apps and connected TV, from automated ad buying and in app bidding to analytics and measurement.

Operations: AppLovin generates about US$6.2b in revenue, almost entirely from its Advertising segment, split roughly evenly between the United States at US$3.1b and the rest of the world at US$3.0b.

Market Cap: US$135.7b

AppLovin is attracting attention because its AI driven AXON platform, high gross and net margins, and double digit earnings and revenue growth forecasts line up neatly with the screener’s focus on fast growth supported by management conviction. The company is using its software leverage, along with e commerce and international expansion, to widen beyond mobile gaming. High quality earnings and strong free cash flow support ongoing buybacks. However, heavy reliance on mobile platforms, data privacy rules, and tough competition from giants like Meta and Google keep execution risk high. Recent analyst commentary highlights both the potential for meaningful share price gains and the possibility of elevated volatility. This makes the full risk and reward profile of AppLovin worth a closer look in the context of this screener theme.

AppLovin’s AXON engine and high margins suggest that the current story may only show half the picture. To see how the growth case compares with key pressure points, start with the analyst forecasts for AppLovin

The three stocks in this article are only a starting point. The full Fast Growing Stocks With High Insider Ownership screen surfaces 167 more companies where insiders hold meaningful stakes and the growth story is still unfolding through the Fast Growing Stocks With High Insider Ownership screener. Use Simply Wall St to identify and analyze the specific catalysts, insider narratives, and growth profiles that matter most to you so you can focus on the highest conviction ideas for further research.

Take Control of Your Investment Journey

If AppLovin 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.

Seeking Fresh Alternatives Before Momentum Flies

Markets move fast and fresh breakout stories do not stay under the radar for long. Spot new momentum plays before the crowd, while it matters, and get in early.

• Spot cash rich compounders early by scanning a curated list of solid balance sheet and fundamentals (45 results) that can help you focus on sturdier businesses before the next pullback tests weaker balance sheets.
• Ride the next leg of the AI wave by hunting for under the radar enablers in the 55 AI infrastructure stocks before institutional money sends volumes flying.
• Position ahead of the next power grid upgrade cycle by zeroing in on infrastructure builders in the 35 power grid technology and infrastructure stocks while valuations still reflect yesterday’s demand.

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.