Global markets grew jittery in early October 2025 after the International Monetary Fund and the Bank of England both warned that stretched valuations in artificial intelligence-linked stocks could unwind abruptly, echoing patterns last seen during the dotcom crash. The warnings landed as investors were also grappling with a US federal government shutdown that had begun on October 1 and delayed key economic data releases, adding a second layer of uncertainty to an already jittery market backdrop.
The IMF and BoE Sound the Alarm
Speaking at the Milken Institute in early October, IMF Managing Director Kristalina Georgieva said equity valuations were "heading toward levels we saw during the bullishness about the Internet 25 years ago," warning that a sharp correction could tighten financial conditions and drag down global growth, particularly for developing economies. The Bank of England's Financial Policy Committee issued a parallel warning, noting that equity valuations appeared stretched, "particularly for technology companies focused on artificial intelligence," and that markets were "particularly exposed should expectations around the impact of AI become less optimistic." Both institutions stopped short of predicting an imminent crash, framing their comments as a caution about tail risk.
A Shutdown Muddies the Data Picture
The warnings coincided with a US government shutdown that began October 1, which delayed the release of official economic indicators, including the monthly jobs report, leaving investors and the Federal Reserve itself with a thinner data set to gauge the economy's health. Despite the shutdown, US equities initially proved resilient, with the S&P 500 extending an eight-session winning streak, its longest since May, before that streak snapped on October 7 amid an AI-linked selloff in Oracle shares. If the shutdown continues, it is on pace to become the longest in US history, with some estimates suggesting it could stretch to around 43 days before a resolution is reached. The Federal Reserve is scheduled to meet October 28-29, and markets widely expect the central bank to cut its benchmark rate by another quarter point to a range of 3.75%-4%, a decision that would likely be made largely without the labor-market and inflation data the shutdown has delayed.
Markets Digest a Disconnect
The juxtaposition of record-setting equity indices with warnings of a potential "disorderly correction" highlighted a growing gap between market pricing and institutional concern over concentration risk in AI-linked mega-cap stocks. Strategists noted that a relatively small group of companies tied to the AI buildout accounted for an outsized share of index gains, meaning any reassessment of AI spending returns had the potential to ripple through broad benchmarks rather than staying contained to a handful of names.
What It Means for Traders
Institutional warnings from bodies like the IMF and Bank of England rarely trigger an immediate selloff on their own, but they raise the bar for subsequent data and earnings to justify elevated valuations. Combined with reduced visibility from delayed government data during the shutdown, traders faced a period where headline risk and positioning, rather than fresh hard data, drove short-term price action. Diversifying exposure away from concentrated AI-linked positions and maintaining tighter risk controls around index-level trades became a more prominent theme on trading desks through the period.
Daily market analysis by BCM Markets.