Reaction follows Wall Street’s worst day in a month and unprecedented slump in investment in China

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Global markets have fallen after a tech sell-off that fuelled Wall Street’s worst day in a month and weak economic data in China showing an unprecedented slump in investment.

Japan’s tech-heavy Nikkei fell 1.8% on Friday, South Korea’s Kospi plunged 2.6% and there was a 1.5% fall in Australia, after a torrid day on Wall Street as Nvidia and other tech companies tumbled over valuation concerns.

Nvidia, the $4.5tn (£3.4tn) tech company, led a wider sector decline, falling 3.6% as investors reassessed the value of companies involved in the AI sector after Japan’s SoftBank sold its entire stake in the company.