Over the last 7 days, the United States market has remained flat, yet it has experienced a notable 20% rise over the past year, with earnings forecast to grow by 17% annually. In such a dynamic environment, identifying stocks that are potentially undervalued and have insider buying can be an effective strategy for investors seeking opportunities in small-cap companies.

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

Name	PE	PS	Discount to Fair Value	Value Rating
Similarweb	NA	2.6x	35.80%	★★★★★★
Industrial Logistics Properties Trust	NA	1.2x	47.48%	★★★★★★
Kingstone Companies	8.1x	1.2x	43.11%	★★★★★☆
Chain Bridge Bancorp	11.7x	4.7x	49.64%	★★★★★☆
Enovis	NA	0.6x	21.67%	★★★★★☆
Bank of Marin Bancorp	NA	7.4x	28.73%	★★★★☆☆
Bank of the James Financial Group	10.9x	2.4x	26.61%	★★★★☆☆
Union Bankshares	9.9x	2.1x	44.20%	★★★★☆☆
Auburn National Bancorporation	10.9x	2.7x	9.38%	★★★☆☆☆
Cardinal Infrastructure Group	NA	1.4x	36.53%	★★★☆☆☆

Here's a peek at a few of the choices from the screener.

Mission Produce (AVO)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Mission Produce is a company engaged in the marketing, distribution, and farming of avocados and other produce, with a market cap of approximately $0.73 billion.

Operations: Mission Produce generates revenue primarily from Marketing & Distribution, with significant contributions from International Farming and Blueberries. The company's gross profit margin has shown variability, reaching 12.23% in recent periods. Operating expenses have been a notable component of the cost structure, impacting overall profitability.

PE: 50.6x

Mission Produce's recent financial performance highlights challenges, with second-quarter sales dropping to US$290.9 million from US$380.3 million a year ago, and a net loss of US$7.2 million compared to prior net income. However, insider confidence is reflected as Jay Pack increased their shares by 11% recently, investing over US$2.1 million. The company's strategic acquisition of Calavo Growers and the ongoing share repurchase program up to US$100 million suggest potential for value realization amid current market conditions.

Cardinal Infrastructure Group (CDNL)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Cardinal Infrastructure Group operates in the heavy construction sector with a market capitalization of $1.43 billion.

Operations: Cardinal Infrastructure Group's primary revenue stream is derived from heavy construction, with recent figures showing a revenue of $662.58 million. The company's gross profit margin has fluctuated, reaching 21.08% at the end of 2025 but declining to 19.21% by mid-2026, indicating variations in cost management efficiency over time.

PE: -250.1x

Cardinal Infrastructure Group, a smaller player in the infrastructure sector, recently showcased impressive sales growth with Q2 2026 revenues reaching US$226.93 million, up from US$106.11 million the previous year. Despite this revenue surge, net income fell to US$4.68 million from US$7.17 million due to higher expenses or other factors not detailed here. The company raised its 2026 revenue guidance to between $880-$900 million, signaling potential future growth despite being dropped from several Russell indices in June 2026 and having volatile share prices recently. Cardinal's strategic expansion includes a new asphalt plant near Raleigh which enhances operational control and efficiency by reducing reliance on third-party suppliers for materials and production scheduling. Additionally, insider confidence is demonstrated through recent stock purchases by executives over the past months, suggesting belief in long-term prospects despite current market challenges.

OppFi (OPFI)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: OppFi operates as a financial technology platform providing accessible lending products to consumers and has a market capitalization of approximately $0.12 billion.

Operations: The company generates revenue primarily from its financial services segment, with a recent figure of $327.48 million. Operating expenses have been significant, with general and administrative expenses consistently forming a large portion of these costs. Notably, the net income margin has shown variability over time, reaching 31.06% in mid-2026 after periods of negative margins earlier that year.

PE: 5.9x

OppFi, a financial technology company, presents an intriguing investment opportunity within the smaller company sector. Despite relying entirely on external borrowing for funding, which carries higher risk than customer deposits, the company's earnings are projected to grow by 36.56% annually. Recently, insider confidence was demonstrated when Founder Todd Schwartz acquired 60,000 shares valued at US$422,988 in August 2026. For the second quarter of 2026, OppFi reported revenue of US$145 million and net income of US$14.84 million compared to a loss last year. Looking ahead to full-year 2026 guidance suggests revenue between US$600 million and US$625 million as they continue their growth trajectory amidst industry challenges and opportunities.

Key Takeaways

• Dive into all 60 of the Undervalued US Small Caps With Insider Buying we have identified here.
• Have a stake in these businesses? Integrate your holdings into Simply Wall St's portfolio for notifications and detailed stock reports.
• Join a community of smart investors by using Simply Wall St. It's free and delivers expert-level analysis on worldwide markets.

Curious About Other Options?

• 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.