The artificial intelligence (AI) boom has created some of the world's most valuable companies, names like Nvidia, TSMC and Microsoft. But, as with many historical gold rushes, some of the biggest opportunities might not lie with the miners, but with those selling the picks and shovels.
Behind the rapid growth of these companies sits a vast ecosystem of companies supplying everything from data centre infrastructure and power supply to cooling technology and networking solutions.
While many of these companies are smaller and less familiar, they have become important beneficiaries of the growing AI demand.
Over the last 12-months the North American smaller companies index has returned 27.1% while the S&P 500 has returned just 17.6%. Much of the smaller companies performance can be related to the build out of AI, with several companies performing exceptionally well.
Annual percentage growth
July 2021 To July 2022 | July 2022 To July 2023 | July 2023 To July 2024 | July 2024 To July 2025 | July 2025To July 2026 | |
|---|---|---|---|---|---|
MSCI North America Small Cap | 2.56% | 3.50% | 13.01% | 1.87% | 27.13% |
S&P 500 | 8.95% | 6.89% | 22.36% | 12.91% | 17.57% |
Why have smaller companies benefited?
The recent growth in AI has been accompanied by significant capital expenditure from some of the world's largest technology companies. Firms like Microsoft, Amazon, Alphabet and Meta have committed hundreds of billions of dollars towards expanding their AI capabilities, investing heavily in data centres, computing infrastructure and networking equipment.
And who is on the other side of much of this spending? Smaller companies. They’re further down the supply chain and are often the businesses that build, supply and service the infrastructure needed for AI.
As a result, many have enjoyed rising demand, improving earnings and strong share price performance. Their fortunes remain closely tied to this spending, and should the large technology companies cut back then future demand might be hit.
But early signs are suggesting this is unlikely at this point. Many believe we’re still in the early adoption phase of AI where the spending could continue for some time. For example, in 2026 Meta are expected to spend as much as $145bn, much of it on AI, up from the $72bn they spent in 2025. This could provide a good runway for future growth.
Where are the opportunities?
The most high profile opportunities are in datacentres.
Datacentres sit at the heart of the AI ecosystem, providing the computing power needed to run the AI models. The construction and expansion of these facilities create demand for a wide range of products and services.
Some less obvious opportunities lie in areas like power and connectivity, which are also becoming increasingly important.
AI workloads consume significant amounts of electricity and require vast quantities of data to be transferred quickly and reliably. This has created big bottlenecks in power management, grid infrastructure and networking technology – creating opportunities for the companies in those sectors.
The potential for ‘off the beaten track’ winners is one reason we prefer active fund managers in the smaller companies space. They are best placed to understand the risks and rewards of investing in these types of companies.
Two funds for exposure to the AI infrastructure build out
Investing in these funds won’t be right for everyone, especially as investing in smaller companies can increase risk. Investors should invest only if a fund matches their objectives, they understand its risks and charges, and it forms part of a diversified portfolio.
For more detail on each fund, its charges and specific risks, please see their factsheets and key investor information.
Artemis US Smaller Companies
Cormac Weldon, the manager of Artemis US Smaller Companies, has over 20 years of experience investing in the US and is supported by co-manager Olivia Micklem and a strong team of company analysts. We like the teams’ disciplined approach, which leans towards growth orientated companies.
The team currently sees the most opportunities in the industrial sector which makes up 24.1% of the fund. It’s important to remember Industrials is a diversified sector that covers many types of businesses like transport company JB Hunt Transport Services and Axon Enterprise who manufacture and sell police equipment like tasers and body cameras.
The fund also has 16.4% invested in AI related companies across multiple sectors. This includes the likes of energy suppliers Bloom Energy who can benefit from the build out of data centres as well as hardware and equipment company Onto Innovation.
The fund is relatively concentrated investing in 40-60 companies out of the thousands in the benchmark. When the managers get it right that means each investment can have a larger impact on performance, boosting returns, however it also creates more risk if the managers get it wrong.
Annual percentage growth
July 2021 To July 2022 | July 2022 To July 2023 | July 2023 To July 2024 | July 2024 To July 2025 | July 2025To July 2026 | |
|---|---|---|---|---|---|
Artemis US Smaller Companies | -12.87 | -2.33 | 24.85 | 6.29 | 27.84 |
IA North American Smaller Companies | -5.58 | 2.24 | 13.16 | -2.71 | 25.84 |
FTF Royce US Smaller Companies
FTF Royce US Smaller Companies has more of a value tilt, backing quality companies trading at what the manager, Lauren Romeo, believes are attractive valuations.
The fund currently has c19.5% invested in AI picks and shovels. Some of that exposure is focussed on the build out of AI data centres where Romero has invested in the likes of AAON who provide liquid cooling solutions and Arcosa who supply steel structures and have benefited from the increased demand from the construction of the data centres.
She also has exposure to the semiconductor industry including MKS Instrument who provide high bandwidth memory and Cohu who provide test equipment which is being used on the AI chips.
Annual percentage growth
July 2021 To July 2022 | July 2022 To July 2023 | July 2023 To July 2024 | July 2024 To July 2025 | July 2025To July 2026 | |
|---|---|---|---|---|---|
FTF Royce US Smaller Companies | 11.49% | 5.85% | 12.28% | -8.76% | 32.21% |
IA North American Smaller Companies | -5.58% | 2.24% | 13.16% | -2.71% | 25.84% |


