European Undervalued Small Caps With Insider Action To Enhance Your Portfolio

The European market has experienced a positive shift, with the pan-European STOXX Europe 600 Index rising by 3.92% amid hopes for a swift resolution to Middle East tensions, which have been influencing energy prices and inflation rates across the region. In this context of fluctuating economic indicators and market sentiment, identifying small-cap stocks that are perceived as undervalued can offer unique opportunities for portfolio diversification and potential growth.

Click here to see the full list of 82 stocks from our Undervalued European Small Caps With Insider Buying screener.

Let’s dive into some prime choices out of from the screener.

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Costain Group is a UK-based engineering and construction company focusing on the transportation and natural resources sectors, with a market cap of approximately £0.15 billion.

Operations: Costain Group’s revenue is primarily derived from its Transportation and Natural Resources segments, with recent figures showing a total revenue of £1.09 billion. The company has seen fluctuations in its gross profit margin, reaching 10.88% by the end of 2025, indicating an improvement over previous periods.

PE: 13.5x

Costain Group, a notable player in infrastructure, recently secured a £45 million contract with Severn Trent PLC for sewage treatment upgrades, enhancing its long-term partnership. Despite sales dipping to £1.05 billion in 2025 from £1.25 billion the previous year, net income rose to £37.3 million. Insider confidence was evident with share repurchases totaling £10 million last year and another planned for 2026 valued at up to £20 million, signaling potential investor optimism amidst higher-risk funding reliance.

Simply Wall St Value Rating: ★★★☆☆☆

Overview: FirstGroup is a UK-based leading provider of transport services, operating in the bus and rail sectors with a market capitalization of approximately £0.99 billion.

Operations: First Bus and First Rail are the primary revenue streams, generating £1.27 billion and £3.75 billion respectively. The company’s gross profit margin has shown a notable increase to 62.57% as of September 2025, reflecting an improvement in cost management relative to revenue growth over recent periods.

PE: 7.2x

FirstGroup, a smaller European transport company, has caught attention due to insider confidence with share purchases made in early 2026. Despite facing an expected earnings decline of 3.2% per year over the next three years, they continue to operate within a challenging funding environment reliant on external borrowing. While not without risks, such insider activity suggests potential optimism from within as they navigate these financial hurdles and strive for future stability.

Simply Wall St Value Rating: ★★★☆☆☆

Overview: BHG Group operates as a leading European online retailer specializing in home improvement and living products, with a market capitalization of SEK 1.36 billion.

Operations: The company’s revenue streams are primarily driven by its Home Improvement, Value Home, and Premium Living segments. Over recent periods, the gross profit margin has shown fluctuations, reaching 18.81% in September 2023 before declining slightly to 16.88% by December 2024. Operating expenses have consistently impacted profitability, with notable increases in non-operating expenses affecting net income outcomes significantly in some quarters.

PE: 29.5x

BHG Group, a European company, has shown promising growth potential with its recent financial performance. For Q4 2025, they reported sales of SEK 3.04 billion and a net income turnaround to SEK 39.6 million from a previous net loss. The company anticipates annual sales growth of 10-15% through organic means and acquisitions over the business cycle. Insider confidence is evident with recent share purchases in early 2026, indicating belief in the company’s future prospects despite reliance on external borrowing for funding.

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.

Companies discussed in this article include LSE:COST LSE:FGP and OM:BHG.

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