Nvidia's Jensen Huang resignation a big moment for AI sector

The resignation of Nvidia chief executive Jensen Huang is a massive moment for AI and markets.

Nvidia is a giant valued in the trillions of dollars and dominates the AI chip market, making it critical to AI expansion.

But it's far bigger than just that.

Nvidia is also a big lender and investor in other AI companies like OpenAI and Anthropic. Those companies use some of that Nvidia money to buy Nvidia chips.

Huang was also a big champion of the AI sector and its future growth. He has a big influence on the Trump White House and is close with US President Donald Trump.

What will it mean for the AI sector to be without his voice? Especially next year, with a new Democratic-controlled Congress likely looking for more AI regulation.

Will it mean a slower pace of growth in AI? The company will now be run by an interim CEO, while it looks for a permanent replacement.

The national security implications for the US could also be huge.

Huang resigned over revelations of two affairs.

One was with a staff member.

The other, however, was with a Chinese businesswoman who-it's claimed in US media reports-has been identified by US officials as a Chinese spy.

China denies the spy allegation.

Nvidia is one of the US's key assets in the AI arms race with China, giving it market dominance over the GPU chips used for AI models.

Some Nvidia chips aren't allowed to be sold in China.

The board has said it has no reason to believe there have been national security breaches relating to the affair with the Chinese businesswoman.

However, Congress looks set to dig deeper, with Huang reportedly agreeing to testify to Congress.

Stocks reacted badly on Wall Street to the news before staging a recovery.

For Kiwis, the biggest impact will come through KiwiSaver funds. Many will have exposure to Nvidia given its size and influence on the Nasdaq index of tech stocks.

However, managing director and founder of Kōura Wealth, Rupert Carlyon, said the resignation may not have a broader impact on people's retirement accounts.

He said volatility is usual for investors, but the market does not appear to be too disturbed.

Regardless, it's likely to be a bumpy ride for AI stocks, as the fallout from this scandal looks far from over.