US Undiscovered Gems To Watch This December 2025

As December 2025 unfolds, the United States stock market is experiencing a notable upswing, with major indexes like the S&P 500 and Nasdaq posting weekly gains driven by a renewed tech rally. This positive momentum highlights the potential for small-cap stocks to shine, especially those that are well-positioned to capitalize on evolving economic conditions and investor sentiment.

Top 10 Undiscovered Gems With Strong Fundamentals In The United States

Click here to see the full list of 298 stocks from our US Undiscovered Gems With Strong Fundamentals screener.

Below we spotlight a couple of our favorites from our exclusive screener.

One and one Green Technologies (YDDL)

Simply Wall St Value Rating: ★★★★★★

Overview: One and one Green Technologies Inc is a waste materials and scrap metal recycling company that focuses on the recycling, production, and trading of recycled scrap metals in the Philippines, with a market cap of $322.54 million.

Operations: YDDL generates revenue primarily through its Metal Processors and Fabrication segment, which accounted for $62.92 million. The company's financial performance is influenced by its ability to manage costs associated with recycling and production processes.

One and one Green Technologies, a growing player in the green tech sector, recently reported a notable increase in sales to US$28.13 million for the first half of 2025, up from US$18.67 million last year. Net income also rose to US$3.83 million from US$2.4 million, reflecting solid operational performance with basic earnings per share climbing to US$0.074 from US$0.0461 previously. Following its recent IPO raising $10 million through the sale of 2 million shares at $5 each, this company has been added to the NASDAQ Composite Index, highlighting its increasing market presence and potential for future growth within this dynamic industry.

• Get an in-depth perspective on One and one Green Technologies' performance by reading our health report here.

• Review our historical performance report to gain insights into One and one Green Technologies''s past performance.

Caledonia Mining (CMCL)

Simply Wall St Value Rating: ★★★★★☆

Overview: Caledonia Mining Corporation Plc primarily operates a gold mine in Jersey and has a market capitalization of $518.91 million.

Operations: The company generates revenue from its gold mining operations, with the primary focus on extracting and selling gold. It experiences fluctuations in net profit margin, which impacts overall profitability.

Caledonia Mining is making waves with its robust earnings growth, boasting a 917.5% increase over the past year, significantly outpacing the industry average of 3.5%. The company's price-to-earnings ratio stands at 10.4x, well below the US market's 19x, suggesting it trades at an attractive value compared to peers. Despite a rise in debt-to-equity from 0.3% to 8.2% over five years, Caledonia maintains strong interest coverage with EBIT covering interest payments by a factor of 46.7x. Recent developments include advancing the Bilboes Gold Project and maintaining steady production guidance for gold output in Zimbabwe.

• Caledonia Mining's strategic growth hinges on the Bilboes project's phased development. Click here to explore the full narrative on Caledonia Mining.

Flotek Industries (FTK)

Simply Wall St Value Rating: ★★★★☆☆

Overview: Flotek Industries, Inc. is a technology-driven green chemistry and data company serving industrial and commercial markets globally, with a market cap of $486.32 million.

Operations: Flotek Industries generates revenue primarily from its Chemistry Technologies segment, which contributed $200.62 million, and its Data Analytics segment, contributing $19.88 million. The company's focus on these segments highlights its diversified approach to revenue generation within the industrial and commercial sectors globally.

Flotek Industries is carving a niche in digital and eco-friendly solutions, with recent earnings showing a net income of US$20.36 million for Q3 2025, up from US$2.53 million the previous year. Their innovative XSPCT optical spectrometer sets new standards in natural gas measurement, promising significant cost and efficiency gains for customers. Despite this growth, the company faces challenges such as reliance on key clients and market volatility. Trading at US$11.04 per share with a target of US$17.5 by 2028 suggests potential upside but requires careful consideration of associated risks like intense competition and execution hurdles in new ventures.

• Flotek Industries aims for growth through digital and eco-friendly solutions driving recurring revenues; click here to explore the full narrative on their strategic positioning.

Key Takeaways

• Navigate through the entire inventory of 298 US Undiscovered Gems With Strong Fundamentals here.
• Got skin in the game with these stocks? Elevate how you manage them by using Simply Wall St's portfolio, where intuitive tools await to help optimize your investment outcomes.
• Simply Wall St is a revolutionary app designed for long-term stock investors, it's free and covers every market in the world.

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.

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