The global cryptocurrency market has shed more than one trillion dollars in value in the past six weeks, as investors grow increasingly uneasy about whether soaring artificial intelligence valuations are signalling a broader tech bubble. Tracking more than eighteen thousand five hundred digital coins, the market has fallen by roughly a quarter since early October.
Bitcoin has been particularly hard hit. The cryptocurrency has dropped around twenty seven percent over the same period and briefly slipped below ninety thousand dollars this week. It is now trading at its lowest level since April, wiping out its gains from earlier in the year.
Global markets unsettled by interest rate uncertainty
The crypto slump mirrors a wider pullback across global stock markets. In the UK, the FTSE one hundred has fallen for four consecutive sessions and recorded its worst day since April. European markets have also weakened, while major US indices including the Dow Jones, S&P 500 and Nasdaq have posted several days of losses.
One of the key drivers is diminishing confidence that the United States Federal Reserve will cut interest rates next month. Higher interest rates tend to push investors away from speculative assets such as cryptocurrencies and fast growing tech companies, adding pressure to already volatile sectors.
Growing warnings over AI exuberance
Much of the current market anxiety is centred on soaring valuations in the AI sector. Sundar Pichai, chief executive of Google parent company Alphabet, has said there is growing irrationality in the AI boom and warned that no company would be immune if the bubble bursts.
JP Morgan vice chairman Daniel Pinto has predicted that AI valuations are likely to face a correction, which could spill into the broader market. Klarna chief executive Sebastian Siemiatkowski has also raised concerns about the huge sums being poured into data centres and chipmakers such as Nvidia, which earlier this year became the first company to reach a four trillion dollar valuation. He warned that pension funds and index trackers are now feeding money into these firms automatically, increasing exposure if prices fall.
A recent Bank of America survey shows that nearly half of fund managers now believe an AI bubble is the biggest single risk facing global markets.
What the downturn means for crypto and AI
The sharp fall in digital assets highlights how closely crypto has become tied to the tech sector. A flash crash in October, triggered by renewed US trade tensions with China, exposed weaknesses in bitcoin’s order books. Long term holders have since taken profits, adding further downward pressure.
Other assets have held up better. The S&P 500 remains higher than at the start of the year, while gold, which surged earlier in 2025 as investors looked for safer ground, has dipped slightly in recent days as hopes of a near term rate cut faded.
For crypto, the risk is that a broader reassessment of AI valuations could pull more money out of speculative markets. For AI, the question is whether unprecedented investment can continue at its current pace without a correction.
Whether this becomes a short lived reset or the start of a deeper downturn will depend on how sentiment evolves over the coming weeks. Both crypto and AI now face a critical test of how much recent growth rests on strong foundations and how much has been fuelled by exuberance.
