The stock market is a timebomb waiting to go off
US equities today account for more than 60pc of the value of global equities as a whole, up from around 40pc 15 years ago.
Granted, the US continues to grow more strongly than much of the rest of the industrialised world and it enjoys a commanding lead in many of the technologies of the future.
Instead, they talk of equity markets being “priced to perfection”, by which they mean there is little or no room for mishaps.
Goldman Sachs strategist says stocks are priced for perfection
The stock market is at the same valuation as when Greenspan made his ‘irrational exuberance’ comment
Fear of missing out, or Fomo,
https://englundmacro.blogspot.com/2025/09/crash-of-1929-it-was-fomo-plus-debt-its.html
further drives the stampede towards the cliff edge. If everybody else is getting rich from America’s stock market boom, the temptation to join in becomes almost irresistible.
First and most important, valuations, greatly inflated by excitement over prospects for artificial intelligence (AI), are becoming divorced from reality.
The forward price-to-earnings (PE) ratio on the S&P is admittedly not quite as high as it has been in recent years, but it is still way above its long-run average.
In any case, it may not be much of a guide, since the forward PE reflects profit expectations, which may be as inflated as the share prices themselves.
A better guide to valuation is the so-called “Shiller PE ratio”, or the cyclically adjusted PE ratio (Cape ratio).
It generally requires some sort of a trigger to shift sentiment from greed to fear.
What Triggered the Crash? - Hussman Funds
Right now, it’s hard to see what it might be, with markets seemingly determined to ignore almost any piece of bad news that is thrown at them.
The bad-news-is-good-news stock market
Jeremy Warner Telegraph 27 September 2025
https://www.telegraph.co.uk/business/2025/09/27/the-stock-market-is-a-timebomb-waiting-to-go-off/
What happens if the US economy crashes?
https://www.youtube.com/watch?v=xJ1WQzqzaao


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