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3 Founder Backed Growth Stocks To Watch In September 2026

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Government bond yields in many major economies are at multi year highs, which indicates that central banks are serious about keeping inflation in check. Higher yields can pressure some stocks, but they also push investors to look more closely at companies with solid growth plans and leaders who have real money at stake. This article highlights three such fast growing, founder backed stocks worth knowing about now.

The stocks covered below are just a small sample of this theme, and the full screen on Simply Wall St surfaces 1,315 more companies where growth ambitions are backed by meaningful insider ownership and aligned incentives. To go straight to the source and identify your own high conviction ideas, analyze the Fast Growing Stocks With High Insider Ownership screener .

Nebius Group (NBIS)

Nebius Group is a Netherlands based technology company focused on full stack infrastructure for the global AI industry, providing large scale GPU clusters, cloud platforms, and developer tools that fit directly with the fast growing AI infrastructure theme. The Nebius AI Cloud segment is the main commercial engine, generating about $1.31b of revenue, compared with $53 million from its TripleTen tech reskilling platform and $3 million from Avride's autonomous driving projects, after eliminations. With a market cap of about $54.7b, Nebius is already a sizeable AI infrastructure player, yet it is still in the early stages of turning heavy AI cloud investment into durable earnings and cash flow.

Nebius Group gives you direct exposure to the build out of AI compute capacity that many enterprises now rely on, with its AI cloud already signing multi year deals and scaling contracted power to support future workloads. The company's close work with NVIDIA and partnerships across the AI ecosystem underpin this growth story, but they come with heavy capital needs, recent convertible debt issuance, and relatively thin margins that need to improve over time. If Nebius can keep filling new capacity, strengthen its brand outside its home region, and show that these investments translate into lasting profitability, the gap between its ambitious plans and its current results could narrow in a way that long term investors will want to watch closely.

Nebius Group is racing to turn massive AI cloud spending into lasting earnings, yet the real story lies in how those plans compare with the analyst forecasts for Nebius Group that may reveal a twist investors are missing

NasdaqGS:NBIS Earnings & Revenue Growth as at Sep 2026
NasdaqGS:NBIS Earnings & Revenue Growth as at Sep 2026

AppLovin (APP)

AppLovin is a US based ad tech company that runs AI powered advertising tools for app developers, helping them attract users and earn more from their apps, which is exactly what the screener theme is about. The Advertising segment, which includes Axon Ads Manager and MAX in app bidding, generates all of the company's US$6.8b in revenue and is the real engine behind its growth profile. With a market cap of about US$104.3b, AppLovin is a large player in digital advertising rather than a niche software stock.

AppLovin gives you exposure to AI driven ad technology where Axon and MAX aim to make every marketing dollar work harder. Recent earnings and revenue forecasts point to a business that analysts expect to grow quickly while keeping margins high. The catch is that this relies on continued adoption of its AI models, successful expansion beyond gaming into areas like e commerce, and no major setbacks from regulators or mobile platforms that could limit data use. Add in meaningful debt and recent insider selling, and you have a fast growing, high quality business that may appeal to investors who are prepared to weigh both the potential benefits and the associated risks.

AppLovin's AI engine is rewriting how ad dollars work across apps, yet the real story is how that growth stacks up against the analyst forecasts for AppLovin that could reveal where this surge might stall or accelerate.

NasdaqGS:APP Earnings & Revenue Growth as at Sep 2026
NasdaqGS:APP Earnings & Revenue Growth as at Sep 2026

Super Micro Computer (SMCI)

Super Micro Computer builds high performance server and storage systems that power AI and data heavy workloads, which is exactly what the "Fast Growing Stocks With High Insider Ownership" screener is looking for. Its AI optimized and GPU accelerated platforms sit within a broader high performance server solutions segment that generated about US$39.1b in revenue, so AI is a major growth driver but not the only use case. With a market cap of roughly US$24.1b, Super Micro Computer is a sizeable player in global data center infrastructure rather than a niche hardware supplier.

Investors watching the AI infrastructure build out may consider Super Micro Computer because its liquid cooled AI servers and modular data center platforms sit at the center of a record order backlog and a busy product launch calendar. Analysts currently expect strong revenue and earnings growth, yet the stock still trades on a lower P/E than many global tech peers. This points to potential value if those forecasts play out. The risk side of the story is real, with dependence on a handful of large customers, rising competition in AI hardware, and margin swings tied to product mix and supply chains. The full picture of how its backlog, margins and insider alignment fit together is where the opportunity, or the warning signs, really start to show.

Super Micro Computer's accelerating AI server story and lower P/E suggest that something in the current risk reward balance may be mispriced. The fuller picture sits inside the 4 key rewards and 2 important warning signs (2 are major!)

NasdaqGS:SMCI P/E Ratio as at Sep 2026
NasdaqGS:SMCI P/E Ratio as at Sep 2026

Seeking Fresh Stock Ideas Beyond AI?

Fresh stock themes can change quickly, and attractive entry points often appear before the crowd notices. Do not get caught watching others ride the breakout; consider acting while opportunities are still developing.

  • Explore early momentum in smaller companies by scanning the 21 elite penny stocks with strong financials that currently pair low share prices with stronger balance sheets than many expect.

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  • Evaluate potential capital return strategies by checking the 11 dividend fortresses that combine higher yields with businesses focused on maintaining consistent payouts.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com

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