By Piero Cingari
Publication Date: 2026-06-05 05:37:00
For most investors, Nvidia, along with Micron, AMD, and Broadcom, has become the face of the artificial-intelligence boom, but the AI supply chain stretches far beyond Silicon Valley.
Across Europe, a group of largely overlooked companies supplying critical hardware for AI data centres have emerged as some of the biggest stock-market winners of 2026.
Europe’s AI potential
Europe may not have produced an AI champion on the scale of Nvidia, Microsoft or OpenAI. Instead, it is home to a growing ecosystem of companies supplying the infrastructure that makes artificial intelligence possible: the lasers that move data between GPUs, the substrates that connect advanced chips, the servers that train models and the testing equipment that validates processors before they leave the factory.
As spending on AI data centres accelerates, these companies have quietly become some of the world’s biggest stock-market winners. Several shares have climbed by hundreds of percent this year, while one has surged more than 2,200%.
Not all of these gains are supported by current earnings. Several companies remain loss-making, while others are trading on expectations of future AI demand rather than present revenues. Investors are effectively betting that AI infrastructure spending will continue to expand rapidly.
The ranking below highlights the 10 European AI-linked stocks that have delivered the strongest gains so far in 2026.
Therankings are based on year-to-date…
