The US Department of Commerce had recently asked Nvidia to check how its products ended up in China over the past year, following which the chipmaking giant has asked big distributors to conduct spot checks on customers in Southeast Asia, The Information reported.
A spokesperson for Nvidia said: "We insist that our customers and partners strictly adhere to all export control restrictions. Any unauthorised deviation of previously-owned products, including any grey market resales, would be a burden on our business, not a benefit."
The US Department of Commerce had not responded to Yahoo Finance UK's request for comment at the time of writing.
It comes as the US has recently broadened its restrictions on exports of chips to China to limit its access to the technology.
Nvidia shares were down nearly 2% in pre-market trading on Friday, with the stock having seen some choppiness over the past few days. Shares rose after analysts reiterated "buy" ratings on the stock and then dipped as markets fell more broadly on hawkish comments from the US Federal Reserve but had rebounded in Thursday's session.
Shares in Nike were down nearly 4% in pre-market trading on Friday, after the sportswear brand posted its latest quarterly earnings after the market close on Thursday.
Nike logged revenue of $12.35bn (£9.86bn) in its fiscal second quarter, which was ahead of expectations of $12.13bn, though this was still a drop from the $13.39bn it reported a year ago.
Adjusted earnings per share came in at $0.78, versus estimates of $0.63, though this was still lower than last year's $1.03.
Delivery giant FedEx surged nearly 8% in pre-market trading on Friday, after the company released its fiscal second quarter earnings and announced plans to spin out the FedEx Freight business.
Adjusted earnings per share of $4.05 bested estimates of $3.98, though revenue of $22bn fell just short of expectations of $22.15bn.
Revenue from its FedEx Freight unit of $2.18bn, was also lower than the $2.36bn expected by analysts.
FedEx CEO Raj Subramaniam said: "Our second quarter results demonstrate that our efforts to transform our operations are working.
"The Federal Express segment delivered operating profit growth despite several headwinds, including the continued weak US domestic demand environment as well as the expiration of our US Postal Service contract."
FedEx said it completed $1bn in share repurchases in the quarter and expected buy back a further $500m of common stock during the remainder of its fiscal 2025 year.
Technology company BlackBerry's third quarter earnings showed its net loss had shrunk to $11m, down from $21m at the same time last year.
However, the company's revenue of $162m for the third quarter was lower than the $175m it reported last year. Shares were down 5% in pre-market trading on Friday.
John J. Giamatteo, CEO of BlackBerry, said that the company had achieved a "significant inflection" in its results this past quarter.
Shareholders in Boohoo are set to vote on Friday on whether they will back the incumbent management team or vote retail mogul Mike Ashley onto the board.
Boohoo and Ashley's Frasers Group (FRAS.L) have been embroiled in public row over the past month, as the latter has tried to gain more control at the fast fashion retailer.
Both Boohoo and Frasers shares were flat ahead of the vote on Friday morning.
Russ Mould, investment director at AJ Bell, said: "It’s no secret which way major shareholder and Ashley-founded Frasers will go, after all it brought the resolutions which also call for the removal of co-founder Mahmud Kamani and the appointment of restructuring expert Mike Lennon as a director.
“However, as Boohoo has been enthusiastically amplifying, the big proxy advisers have been recommending investors vote against Frasers’ proposals.
"Boohoo is in a vulnerable position given it is trading way below the 400p-plus highs the shares attained in 2020.
"Ethical issues around its supply chain, balance sheet problems, a shift away from online shopping for clothes and a loss of momentum for the whole fast fashion trend have conspired to put the stock on its knees.
"For all his detractors, Ashley has a lot of experience in retail and has broadly been successful, so some shareholders might welcome his input. Others may agree with Boohoo that this is an attempt to take control of the business by stealth and ultimately gobble it up."
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Other companies in the news on Friday 20 December:
