Market cap rankings ／ By region ／ UK
UK AI Compute Companies
UK · AI Compute Companies by Market Cap (October 31, 2026)
| # | Company | Market | Market cap | % of UK | Today | 30 days | Close | Segment |
|---|---|---|---|---|---|---|---|---|
| 1 |  Arm Holdings ARM | US | $220.0B | 91.5% | -9.97% | 205.97 USD | EDA & Semiconductor IP | |
| 2 |  nVent Electric NVT | US | $20.4B | 8.5% | -8.81% | 125.98 USD | Liquid Cooling & Thermal |
UK has 2 companies on the AI compute value-chain market-cap ranking, with a combined market cap of $240.4 billion ($240.4B) — 1.2% of the $20.84T tracked across the whole chain.
Arm Holdings leads at $220.0B (91.5% of the country), with top-3 concentration at 100.0%. Its companies are concentrated in: EDA & Semiconductor IP (91.5%), Liquid Cooling & Thermal (8.5%).
"% of UK" is the company's share of that country's AI-compute market cap; the "Segment" column links to each segment ranking for cross-comparison.