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UK regulator urges pension trustees to stress-test over AI concentration risk

By Thomson Reuters Oct 22, 2026 | 6:01 AM

LONDON, Oct 22 (Reuters) – British pension funds could have greater exposure to AI-related risks than trustees realise, Britain’s pensions regulator said ​on Thursday, and urged them to ‌challenge advisers on how a market downturn could affect their portfolios.

In a statement the Pensions Regulator, or TPR, said AI was increasingly embedded across sectors, meaning ‌even ​an apparently diversified portfolio could ⁠have “hidden exposure”.

It said trustees ⁠should assess both direct and indirect AI-related exposure across asset classes and stress-test how portfolios would perform under severe market stress.

Ben Gunnee, ​executive director of market oversight at the TPR, said all pension schemes must maintain standards ⁠of investment governance and ⁠manage risk over the short, medium ​and long term.

“That is why trustees should assess their ​AI-related exposure, test portfolio resilience and challenge ‌advisers now to understand how market developments could affect their investments under different market conditions,” he said in a statement.

The Bank of England ⁠in a report in July also flagged the risk of a lack transparency in some AI funding ⁠arrangements may ‌make it hard to identify the ⁠extent of the issue, meaning ​any selloff ‌in highly valued AI stocks ​could have ⁠a very broad impact.

Global corporate investment in AI-related activity more than doubled in 2025, according to the Stanford Institute for Human-Centered Artificial Intelligence’s 2026 AI Index Report.

(Reporting by Phoebe Seers; editing by ​Barbara Lewis)