The Nasdaq 100 plunged into a bear market with its losses from a February high surging past 20 per cent as investors ditch once high-flying tech shares in a broad market rout.
The six-week sell-off has wiped out about $US6.4 trillion ($10.4 trillion) from the tech-heavy benchmark since its peak, spurred by worries that President Donald Trump’s tariffs will push the US economy into recession.