This seems to be the proximate cause:
The sell-off came after US data on Wednesday showed stateside inflation jumped to a higher-than-expected 3.7% in September, marking the fastest increase in prices since the consumer price index (CPI) rate hit a three-year peak of 4.2% in May.
Fresh data on Thursday showing US producers increased their prices by 6.3% year on year in September – the sharpest rise since December 2022 – added to inflationary jitters.
The figures have rattled investors who are now expecting fresh interest rate increases by the US Federal Reserve, with some punters pricing in another increase as soon as the end of the month.
It seems that investors are worried AI debt will be even more difficult to pay off once the Fed jacks up interest rates
