In October 2025, the European markets have experienced a robust rally, with the pan-European STOXX Europe 600 Index reaching record levels due to a surge in technology stocks and expectations for lower U.S. borrowing costs. As investors navigate this optimistic landscape, identifying promising small-cap stocks involves looking for those with strong fundamentals and potential insider activity, which can indicate confidence in future growth prospects amidst the broader economic sentiment.

Top 10 Undervalued Small Caps With Insider Buying In EuropeNamePEPSDiscount to Fair ValueValue RatingCairn Homes11.9×1.5×31.70%★★★★★★Speedy HireNA0.3×20.07%★★★★★☆BEWINA0.5×38.13%★★★★★☆Bytes Technology Group17.4×4.4×12.03%★★★★☆☆Renold10.7×0.7×0.12%★★★★☆☆Social Housing REITNA6.7×36.30%★★★★☆☆Fastighets AB Trianon13.3×4.4x-202.65%★★★★☆☆Pexip Holding35.3×5.2×41.93%★★★☆☆☆Nyab22.0x1.0x35.77%★★★☆☆☆FastPartner16.3×4.2x-26.84%★★★☆☆☆

Click here to see the full list of 51 stocks from our Undervalued European Small Caps With Insider Buying screener.

Let’s explore several standout options from the results in the screener.

Simply Wall St Value Rating: ★★★★★★

Overview: Breedon Group is a construction materials company involved in the production and supply of cement, aggregates, asphalt, and ready-mixed concrete, with a market capitalization of approximately £1.88 billion.

Operations: Breedon Group generates revenue primarily from its operations in Great Britain, Ireland, and the United States, with significant contributions from its cement segment. The company has seen fluctuations in gross profit margin, which reached a high of 82.31% as of December 2024. Operating expenses have varied over time but remain a substantial part of the cost structure.

PE: 13.4x

Breedon Group, a construction materials company, shows potential among European small caps despite challenges. Recent earnings reveal sales of £815.9 million for the first half of 2025, up from £764.6 million the previous year, though net income dipped to £27.5 million from £34.1 million. Insider confidence is evident with recent share purchases by executives in July 2025, suggesting belief in future growth prospects as earnings are forecasted to grow annually by 16%.

LSE:BREE Share price vs Value as at Oct 2025LSE:BREE Share price vs Value as at Oct 2025

Simply Wall St Value Rating: ★★★☆☆☆

Overview: MilDef Group is a company that specializes in providing ruggedized computer hardware solutions, with a market capitalization of approximately SEK 1.67 billion.

Operations: MilDef Group’s revenue primarily stems from its computer hardware segment, amounting to SEK 1.39 billion. The company’s gross profit margin has shown variability, reaching up to 49.50% in recent periods. Operating expenses are significant, with a considerable portion allocated to sales and marketing efforts.

PE: -41.5x

MilDef Group, a European defense technology company, is navigating its small cap status with strategic maneuvers. Recent share repurchases totaling SEK 3.77 million reflect insider confidence and align with their long-term incentive plans. Their focus on M&A activities signals ambition for growth, while showcasing cutting-edge products at DSEI 2025 highlights their commitment to innovation in military technology. Despite a dip in Q2 net income to SEK 9.2 million from last year’s SEK 23.3 million, revenue increased to SEK 383.3 million, indicating potential for future expansion amidst evolving defense needs and market dynamics.

OM:MILDEF Share price vs Value as at Oct 2025OM:MILDEF Share price vs Value as at Oct 2025

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Vimian Group operates in the animal health sector, offering products and services across medtech, diagnostics, specialty pharma, and veterinary services with a market cap of €1.85 billion.

Operations: Vimian Group’s revenue primarily stems from its Specialty Pharma and Medtech segments, contributing €178.20 million and €142.10 million respectively. The company has experienced fluctuations in its net income margin, with a recent figure of 5.64% as of June 2025, indicating variability in profitability over time. Operating expenses have consistently been a significant component of the cost structure, with general and administrative expenses reaching €190.30 million by the latest reporting period.

PE: 60.4x

Vimian Group’s recent financial results highlight a strong performance, with second-quarter sales rising to €104.3 million from €91 million the previous year, and net income increasing to €8.3 million from €4.9 million. Insider confidence is evident as Director Gabriel Fitzgerald acquired 6.2 million shares, reflecting a 12% increase in their holdings valued at approximately €189 million. Despite leadership changes and reliance on external funding sources, the company shows promising growth potential with earnings forecasted to grow annually by over 42%.

OM:VIMIAN Share price vs Value as at Oct 2025OM:VIMIAN Share price vs Value as at Oct 2025Key TakeawaysWant To Explore Some Alternatives?

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.

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