<ul><li>US stocks fell after Donald Trump imposed new trade restrictions on Nvidia, causing a sell-off across the semiconductor industry.</li><li>Nvidia's shares dropped about 6% as the company expects a $5.5bn hit due to the new license requirements.</li><li>The trade restriction will also affect rival chip business Advanced Micro Devices (AMD), with their shares down 6.2%.</li><li>The World Trade Organization warned that Trump's tariffs will reverse international trade and depress global economic growth.</li></ul>

US trade restriction on Nvidia sends markets tumbling again

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