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Central BanksMediumUpdated•Originally published 29 June 2026•Updated 30 June 2026•
1 min read

BIS warns AI investment bubble echoes dotcom crash

Glowing blue tower labeled AI rising from a stone base, with a BIS warning seal and a dot-com crash chart background.

Key Facts

1Bank for International Settlements compares AI investment surge to dotcom crash and railway mania, warning of a potential reckoning.

As global markets experience a surge in AI investments, the Bank for International Settlements (BIS) issued a rare warning. In its annual report released on June 29, the BIS compared the current AI boom to the dotcom crash and railway mania, cautioning of a potential correction. According to the report, the pattern of investment suggests overvaluation that could lead to significant losses.

The warning comes amid over $1 trillion in AI investments, according to the report's estimates. The BIS argues that the intense focus on AI echoes historical bubbles, such as the 19th-century railway mania that ended in a devastating collapse. The report adds that investors may overlook high valuations in favor of technological excitement, raising the risk of a correction.

The warnings suggest the need to monitor upcoming economic data and central bank rhetoric on AI. Earnings results from major tech companies in the coming quarters will be a key test for the bubble's reality. In the near term, these cautionary signals could put pressure on AI-related stocks.