The United States market has shown robust performance with a 1.1% increase over the last week and a remarkable 27% rise over the past year, alongside an optimistic forecast of 17% annual earnings growth. In this thriving environment, identifying small-cap stocks that exhibit strong fundamentals and insider activity can be particularly appealing for investors seeking opportunities potentially overlooked by broader market trends.

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

Name	PE	PS	Discount to Fair Value	Value Rating
PCB Bancorp	8.5x	2.9x	20.67%	★★★★★☆
First United	9.5x	2.7x	47.77%	★★★★★☆
Financial Institutions	8.7x	2.8x	33.24%	★★★★★☆
Ferroglobe	NA	0.5x	25.91%	★★★★★☆
Appian	1594.3x	1.9x	44.57%	★★★★★☆
First Bancorp	8.8x	3.3x	31.74%	★★★★☆☆
New Peoples Bankshares	8.9x	2.3x	36.87%	★★★★☆☆
Aldeyra Therapeutics	NA	NA	48.15%	★★★★☆☆
Metropolitan Bank Holding	12.7x	3.6x	40.96%	★★★☆☆☆
Ultralife	NA	0.5x	18.31%	★★★☆☆☆

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

ACNB (ACNB)

Simply Wall St Value Rating: ★★★★☆☆

Overview: ACNB is a financial services company primarily engaged in banking and insurance operations, with a market capitalization of approximately $0.32 billion.

Operations: ACNB generates revenue primarily from its banking and insurance segments, with banking contributing $150.43 million and insurance $9.64 million. The company's net income margin has shown variability, reaching as high as 34.21% in Q1 2026, reflecting fluctuations in profitability over time. Operating expenses are a significant cost component, consistently comprising a large portion of the revenue across periods analyzed.

PE: 10.5x

ACNB Corporation, a company with a market cap under US$1 billion, displays characteristics of being undervalued. Recent insider confidence is evident through share purchases. The company has repurchased 314,000 shares for US$11.84 million and announced a new buyback plan for 310,000 shares. Earnings have rebounded significantly with net income reaching US$13.7 million in Q1 2026 from a loss the previous year. A dividend increase and special dividend highlight its commitment to shareholder returns while strategic debt financing supports growth initiatives.

Franklin Financial Services (FRAF)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Franklin Financial Services operates primarily in community banking and wealth management, with a market capitalization of $0.12 billion.

Operations: Franklin Financial Services generates revenue primarily from its Community Banking and Wealth segments, with Community Banking contributing the majority at $72.14 million. The company has consistently reported a gross profit margin of 100%, indicating that it does not incur cost of goods sold in its financial statements. Operating expenses are significant, with General & Administrative Expenses being the largest component, reaching $50 million in recent periods.

PE: 10.6x

Franklin Financial Services, a smaller player in the financial sector, has shown promising growth with net income rising to US$6.64 million from US$3.92 million year-over-year for Q1 2026. Earnings per share increased to US$1.48 from US$0.88, reflecting strong operational performance. Insider confidence is evident as Gregory Snook increased their holdings by 2,200 shares recently, a significant 33% rise in transaction shares. The company also raised its quarterly dividend to $0.34 per share, indicating steady shareholder returns and potential future growth prospects with an earnings forecast of 11% annually.

Greene County Bancorp (GCBC)

Simply Wall St Value Rating: ★★★★☆☆

Overview: Greene County Bancorp operates as a financial institution primarily engaged in banking operations, with a market capitalization of approximately $0.44 billion.

Operations: Greene County Bancorp generates revenue primarily from banking operations, with recent figures showing $86.44 million in revenue and $39.02 million in net income as of March 31, 2026. The company has consistently achieved a gross profit margin of 100%, indicating no cost of goods sold reported over the observed periods. Operating expenses include general and administrative costs, which were $36.07 million for the same period, alongside sales and marketing expenses of $0.50 million.

PE: 10.9x

Greene County Bancorp showcases potential as an undervalued player with solid financial performance. Recent earnings for the third quarter ended March 31, 2026, revealed a net interest income jump to US$20.19 million from US$16.21 million year-over-year, while net income rose to US$10.52 million from US$8.05 million. Insider confidence is evident with Independent Director Tejraj Hada purchasing 6,000 shares valued at approximately US$131,780 in April 2026, reflecting a significant percentage change in their holdings of over 20%. The company also announced a share repurchase program for up to 400,000 shares and maintained its quarterly dividend at $0.10 per share amid stable cash flow and reduced loan charge-offs compared to last year’s figures.

Taking Advantage

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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.