The United States market has shown robust performance recently, climbing 1.8% in the last seven days and rising 28% over the past year, with earnings forecasted to grow by 17% annually. In this thriving environment, identifying small-cap stocks that are potentially undervalued and experiencing insider action can present unique opportunities for investors seeking to capitalize on growth prospects within emerging companies.

Top 10 Undervalued Small Caps With Insider Buying In The United States

Name	PE	PS	Discount to Fair Value	Value Rating
First United	9.9x	2.9x	45.51%	★★★★★☆
Financial Institutions	9.1x	2.9x	30.25%	★★★★★☆
Appian	1828.3x	2.1x	37.42%	★★★★★☆
AVITA Medical	NA	1.9x	46.50%	★★★★★☆
First Bancorp	9.1x	3.4x	30.06%	★★★★☆☆
PCB Bancorp	8.8x	3.0x	17.73%	★★★★☆☆
New Peoples Bankshares	8.8x	2.3x	37.32%	★★★★☆☆
Ferroglobe	NA	0.6x	19.09%	★★★★☆☆
Metropolitan Bank Holding	12.9x	3.7x	39.94%	★★★☆☆☆
German American Bancorp	12.1x	4.4x	44.65%	★★★☆☆☆

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

Elmet Group (ELMT)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Elmet Group specializes in engineered microwave products and critical materials and components, with a market cap of $2.45 billion.

Operations: The company generates revenue primarily from Critical Materials and Components ($171.96 million) and Engineered Microwave Products ($29.68 million). For the period ending December 31, 2025, it recorded a gross profit margin of 20.85%, with operating expenses totaling $26.37 million, including $6.66 million in sales & marketing expenses and $3.36 million in R&D expenses.

PE: 76.4x

Elmet Group, a smaller company recently added to the NASDAQ Composite Index, showcases potential for growth despite some challenges. They completed an IPO raising approximately US$120 million and have restructured their fiscal year for better alignment with reporting requirements. Insider confidence is evident as Kimberly Anania purchased 7,000 shares valued at US$98,000. Although earnings quality is affected by large one-off items and debt relies on higher-risk external borrowing, revenue growth is projected at 28% annually.

Ferroglobe (GSM)

Simply Wall St Value Rating: ★★★★☆☆

Overview: Ferroglobe is a leading producer of silicon metal, silicon-based alloys, and manganese-based alloys with a market capitalization of approximately $1.8 billion.

Operations: Ferroglobe generates revenue primarily through its core operations, with recent figures showing $1.72 billion for the quarter ending September 30, 2023. The company incurs costs of goods sold (COGS) amounting to $969.29 million in the same period, impacting its overall profit margins. Notably, the gross profit margin has shown variability over time, reaching 46.71% in December 2023 before declining to 37.52% by December 2024 as expenses fluctuated across different periods.

PE: -7.5x

Ferroglobe, a player in the materials sector, is attracting attention with its blend of financial dynamics. Recent earnings for Q1 2026 show sales of US$347.75 million, up from US$307.18 million a year earlier, and a narrowed net loss of US$7.05 million compared to US$66.48 million previously. The company repurchased shares worth US$7.14 million under an ongoing buyback program since November 2024, indicating confidence in its valuation potential amidst challenging funding conditions reliant on external borrowing sources only.

Black Rock Coffee Bar (BRCB)

Simply Wall St Value Rating: ★★★★☆☆

Overview: Black Rock Coffee Bar operates a chain of coffee shops, focusing on specialty coffee and beverages, with a market capitalization of $1.5 billion.

Operations: The company generates revenue primarily from its restaurant segment, reaching $210.96 million in the latest period. Cost of Goods Sold (COGS) was $118.80 million, contributing to a gross profit margin of 43.68%. Despite improvements in net income margins over time, the company recorded a positive net income of $0.32 million most recently after previously experiencing losses. Operating expenses were significant at $91.61 million, with General & Administrative expenses being the largest component at $78.84 million.

PE: 576.6x

Black Rock Coffee Bar, a boutique coffee chain from Oregon, is expanding rapidly with new locations in Mesa and Tempe, growing its Phoenix presence to 57 stores. The company reported Q1 2026 sales of US$55.38 million, up from US$44.77 million the previous year, with net income at US$0.378 million. Despite relying on higher-risk external borrowing for funding and experiencing share price volatility recently, insider confidence remains high as insiders have been purchasing shares consistently over recent months.

Where To Now?

• Investigate our full lineup of 73 Undervalued US Small Caps With Insider Buying right here.
• Already own these companies? Link your portfolio to Simply Wall St and get alerts on any new warning signs to your stocks.
• Enhance your investing ability with the Simply Wall St app and enjoy free access to essential market intelligence spanning every continent.

Contemplating Other Strategies?

• Explore high-performing small cap companies that haven't yet garnered significant analyst attention.
• Fuel your portfolio with companies showing strong growth potential, backed by optimistic outlooks both from analysts and management.
• Find companies with promising cash flow potential yet trading below their fair value.

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.