Over the last 7 days, the United States market has experienced a 2.3% decline, yet it remains up by 21% over the past year with earnings forecasted to grow annually by 19%. In this context of fluctuating market conditions, identifying promising small-cap stocks with notable insider activity can offer intriguing opportunities for investors seeking potential value.

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

Name	PE	PS	Discount to Fair Value	Value Rating
Appian	1737.8x	2.0x	39.26%	★★★★★☆
Bank of the James Financial Group	10.2x	2.2x	20.12%	★★★★☆☆
Angel Oak Mortgage REIT	13.5x	6.1x	23.47%	★★★★☆☆
Similarweb	NA	1.5x	35.08%	★★★★☆☆
Angel Studios	NA	1.5x	20.70%	★★★★☆☆
First Bancorp	10.5x	4.0x	19.65%	★★★☆☆☆
Patria Investments	24.6x	4.5x	8.47%	★★★☆☆☆
Union Bankshares	9.4x	2.0x	19.22%	★★★☆☆☆
NameSilo Technologies	422.3x	2.0x	41.67%	★★★☆☆☆
National Vision Holdings	28.9x	0.7x	38.87%	★★★☆☆☆

We'll examine a selection from our screener results.

i3 Verticals (IIIV)

Simply Wall St Value Rating: ★★★☆☆☆

Overview: i3 Verticals is a technology and payment processing company that provides integrated software and services to various industries, with a focus on the public sector, and has a market capitalization of approximately $0.74 billion.

Operations: The company's revenue primarily comes from its public sector segment, with a recent reported figure of $216.99 million. Over time, the gross profit margin has shown variability, reaching as high as 93.16% in September 2022 and standing at 68.13% in March 2026. Operating expenses are significant and include general & administrative costs, which have been a major component of total expenses across periods reviewed.

PE: 139.6x

i3 Verticals, a smaller U.S. company, recently reported a rise in quarterly sales to US$57.52 million from US$54.14 million the previous year, with net income improving to US$1.46 million from a loss of US$0.154 million. The company has shown insider confidence through share repurchases totaling 2,695,740 shares for US$60 million since February 2026 and announced an additional buyback plan worth up to $100 million in May 2026. Despite lowering its annual revenue guidance slightly, the firm projects significant earnings growth of over 51% annually while relying on external borrowing for funding.

AEVEX (AVEX)

Simply Wall St Value Rating: ★★★★★☆

Overview: AEVEX specializes in providing advanced solutions and tactical systems, with a focus on global operations, and has a market cap of $2.75 billion.

Operations: Tactical Systems is the primary revenue driver, contributing significantly more than Global Solutions. Over recent periods, the gross profit margin has fluctuated between 21.78% and 28.12%. Operating expenses are primarily composed of general and administrative costs, with notable allocations to R&D.

PE: 30.8x

AEVEX Corp., a small company in the defense and emergency response sector, has recently seen insider confidence with share purchases over the past quarter. Despite a volatile share price and lower profit margins compared to last year, AEVEX's revenue surged to US$216.69 million in Q1 2026 from US$53.26 million a year ago, reflecting strong operational growth. Recent contract wins with Cal OES and the U.S. Air Force highlight its strategic positioning in providing advanced airborne intelligence solutions, potentially driving future earnings expansion despite current financial challenges like high-risk funding sources and uncovered interest payments.

Byline Bancorp (BY)

Simply Wall St Value Rating: ★★★★☆☆

Overview: Byline Bancorp operates as a bank holding company providing a range of banking products and services, with a market cap of approximately $0.81 billion.

Operations: Byline Bancorp generates revenue primarily through its banking operations, with a gross profit margin consistently at 100%. The company's net income margin has shown an upward trend, reaching 32.96% as of the latest period ending in March 2026. Operating expenses are a significant component of costs, with general and administrative expenses being the largest portion.

PE: 11.7x

Byline Bancorp, a smaller financial entity in the U.S., has demonstrated strong financial performance recently. Their Q1 2026 earnings showed net interest income of US$99.86 million, up from US$88.22 million the previous year, and net income rose to US$37.58 million from US$28.25 million. Insider confidence is evident as they acquired shares during this period, reflecting belief in future prospects despite recent shelf registration filings for $63.4 million common stock offerings related to ESOPs.

Key Takeaways

• Embark on your investment journey to our 61 Undervalued US Small Caps With Insider Buying selection here.
• Have you diversified into these companies? Leverage the power of Simply Wall St's portfolio to keep a close eye on market movements affecting your investments.
• Enhance your investing ability with the Simply Wall St app and enjoy free access to essential market intelligence spanning every continent.

Interested In Other Possibilities?

• 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.