It’s riskier to invest in small cap stocks than mega-cap leaders, but those same small cap investments can produce outsized returns. The advantage of small cap stocks is that fewer people know about them, and that makes it possible for savvy investors to find asymmetric risk opportunities. All stocks get lifted by a bull market, but these three small caps are worth keeping on your radar.
Amplitech
Amplitech (NASDAQ:AMPG) produces high-performance radio frequency components that are essential for AI, 5G networks, and quantum computing. It has several high-profile customers, including IBM (NYSE:IBM | IBM Price Prediction), Disney (NYSE:DIS), and NASA. Revenue surged by 115% year-over-year in Q3 2025, and gross profits more than doubled.
The company has a robust balance sheet that includes $11.9 million in cash and zero long-term debt as it moves toward the next stage of growth. Amplitech projects $25 million in fiscal 2025 sales, followed by at least $50 million in fiscal 2026 revenue.
Amplitech is targeting several high-growth industries, such as wireless power transmission, public and private 5G business and security, defense and IT security, and quantum computing blockchain. The company’s limited penetration into these industries, combined with their high CAGRs, suggests Amplitech can rapidly scale if execution goes smoothly.
Digi Power X
Digi Power X (NASDAQ:DGXX) is an AI data center stock that has almost doubled over the past year. The company’s recent $20 million investment in Nvidia (NASDAQ:NVDA) chips is a good sign as it continues to expand. Digi Power X’s AI investments also come as it increases its Bitcoin (CRYPTO:BTC) and Ethereum (CRYPTO:ETH) holdings.
Digi Power X is gradually scaling Tier III AI data centers, which are more lucrative than crypto data centers. It intends to go from 5 megawatts in Q1 2026 to 55 megawatts in Q4, and that includes 40 megawatts of critical load capacity. Digi Power X has almost 200 megawatts of available power today, with an additional 200 megawatts becoming available by 2028.
Digi Power X is scaling quickly and expects to have 195 megawatts online by the end of 2027, and that includes 140 megawatts of critical IT load. Digi Power X’s megawatts are all in the United States, and investors who feel like they missed out on IREN (NASDAQ:IREN) may want to give this budding AI data center stock a closer look.
POET Technologies
POET Technologies (NASDAQ:POET) creates photonic integrated circuits, light sources, and optical modules for AI data centers. These components are integral to AI data centers since they increase data speed. Faster data speeds let AI data center providers get more out of every chip.
POET Technologies is positioned to benefit greatly from the AI infrastructure buildout, especially with the company on the verge of commercial launches for its optical engine and light source products. POET Technologies told investors recent orders tied to these launches are the beginning of a revenue ramp up, which should increase steadily throughout 2026.
The company made $298,434 in Q3 2025 revenue, which is a massive jump from the $3,685 in revenue from Q3 2024. The company is positioned like a venture capital investment that is about to reach more customers and accelerate sales growth. The stock has outperformed the S&P 500 with a 16% year-to-date gain, and it is also up by more than 60% over the past year.
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