Stocks, oil, precious metals plunge on volatile start to the week

Investors resumed Friday's rollercoaster ride on trading floors, as they assessed geopolitical developments, the latest batch of earnings from market heavyweights and the prospect for US interest rate cuts. After a strong start to the year fuelled by fresh hopes for artificial intelligence, stocks went into reverse last week as traders again questioned the wisdom of the vast sums of cash pumped into the sector and worries about when they will see returns. That has also raised fears of a tech bubble...