The City is abuzz with a familiar unease. Artificial intelligence stocks, once the darlings of a post-pandemic recovery, are now flashing danger signals that veteran traders recognise all too well. The Financial Conduct Authority is facing mounting pressure to tighten its grip as valuations detach from reality, threatening to destabilise the London market. This is not a call for panic, but a sobering reminder that markets, left to their own devices, can become dangerously irrational.
Consider the numbers. The FTSE 100 has lagged its US counterparts, but a handful of AI-focused companies have seen their share prices triple over the past year on the back of little more than hype. Revenue growth is modest, margins are thin, yet price-to-earnings ratios have entered the stratosphere. It resembles the dot-com frenzy, though perhaps with an even shinier wrapper. The Bank of England has already flagged concerns about financial stability, but the FCA remains the watchdog that can actually bite.
Why should this matter to the average Briton? Because pension funds and retail investors are piling in, lured by promises of paradigm-shifting returns. When the music stops, and it always does, the losses will not be confined to hedge funds and venture capitalists. Ordinary savers will bear the brunt, just as they did with the tech wreck of 2001 and the banking crash of 2008.
The argument for regulatory intervention is simple: market efficiency cannot function when speculation replaces fundamentals. The FCA has tools at its disposal: stricter disclosure requirements, margin limits on AI-themed ETFs, and even a temporary ban on new listings for companies that cannot demonstrate sustainable business models. None of this would kill innovation, but it would inject a dose of sobriety.
Critics will cry foul, claiming that regulation stifles growth. They are the same voices that defended credit default swaps before 2008. Let them. A bubble is a bubble, and London has too much to lose by pretending otherwise. Capital flight is already a concern, with investors shifting money to Frankfurt or New York, where regulation is either more permissive or more predictable. The last thing the UK needs is a localised crash that erodes what little confidence remains in the City.
Gilt yields, meanwhile, are creeping up as the market prices in higher risk. If the AI bubble bursts, expect a flight to safety that pushes yields down temporarily, but the long-term damage to investor trust could send them higher still. Fiscal responsibility demands that the treasury keep its distance, but the FCA must act now. Delaying only increases the eventual cost.
In short, the situation demands a cold, hard look at the numbers. The FCA should issue a warning, tighten rules, and prepare contingency plans. The alternative is to let the market correct itself, which it will, but with collateral damage that could set London back years. As a financial editor, I have seen enough cycles to know that prudence now is cheaper than bailouts later.
