Fast-Growing Stocks with High Insider Ownership: IREN, Nebius Group, and Klarna Group

With services sectors in the US and Eurozone showing stronger growth through recent PMI readings, investors are looking for companies that can turn this resilience into earnings momentum. Three stocks from a screener of fast-growing companies with high insider ownership caught our attention: IREN, Nebius Group, and Klarna Group.

IREN is an Australian company that owns and operates vertically integrated data centers and computing hardware in Australia and Canada. It uses this infrastructure to mine Bitcoin as its core growth-facing business, while also offering colocation and infrastructure services. The company has a large backlog of multi-year contracts with heavyweight customers such as Microsoft and Nvidia.

Nebius Group is a technology company focused on full-stack AI infrastructure, offering large-scale GPU clusters, cloud platforms, and tools for developers. Its AI cloud business, supported by an alliance with Nvidia, is the clearest link to the fast-growing, insider-backed theme. The company has strong AI cloud momentum and a large backlog.

Klarna Group is a digital bank and flexible payments provider best known for its pay-now, pay-later products that let consumers split purchases over weeks or up to 48 months. It has a strong presence in the US and Europe, with revenue growth of 27% in Q2 2026.

While these companies show promise, investors should be aware of potential risks such as high external funding, past dilution, and thin profit margins. As always, it's essential to do your own research and consider multiple perspectives before making investment decisions.