For months, the market has been drunk on artificial intelligence. Every earnings call, every product launch, every piece of code written in Silicon Valley has been treated as a sign of a new economic era. But now, the hangover is setting in. City analysts are sharpening their pencils and warning that the AI stock bubble is showing signs of imminent deflation.
Take a look at the charts. The tech-heavy Nasdaq has outperformed the FTSE 100 by a staggering margin in the past year. But that outperformance has been driven by a handful of stocks, each priced to perfection. Nvidia, the poster child of the AI boom, trades at a price-to-earnings ratio that would make a dot-com CEO blush. The narrative is seductive: AI will transform everything, from healthcare to logistics, and these companies are the picks and shovels of the revolution. But markets have a habit of overdiscounting the future, and central banks are not cooperating.
Interest rates remain elevated, and the Bank of England, alongside the Federal Reserve, has made it clear that inflation is not yet vanquished. Higher rates for longer means the present value of those distant AI profits shrinks. The cost of capital matters, and it is rising. Meanwhile, the gilt yield curve is sending a warning: long-term yields are creeping up, reflecting a fear that fiscal largesse (government spending) will keep inflation sticky. This is a headache for growth stocks.
Then there is the capital flight issue. Global investors have crowded into US tech, treating it as a safe haven from geopolitical uncertainty and weak European growth. But as valuations become stretched, the risk of a sudden reversal grows. If the dollar weakens or a shock emerges from the earnings season, the exit door could become very narrow.
Consider the recent earnings reports from major AI names. They beat expectations, but the market yawned. This is a classic late-cycle signal. When good news fails to lift prices, it means the optimism is already fully priced in. The next leg must come from reality exceeding fantasy, and that is a tall order.
Some hedge funds have already started trimming positions. Short interest is creeping up in certain AI-related ETFs. The smart money is hedging. But retail investors, lured by the fear of missing out, remain heavily long. This asymmetry is dangerous.
Of course, I am not saying the AI revolution is a sham. The technology has immense potential. But markets are discounting mechanisms, and they have a habit of getting ahead of themselves. The correction, when it comes, will be swift and painful for those who bought the narrative at the peak.
The bottom line: diversify, take profits, and keep a close eye on gilt yields and central bank rhetoric. The party might still be going on, but the barman is looking at his watch.
