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Investors can own a slice of top artificial intelligence companies like Tesla, Nvidia, and Alphabet with this Ark Invest exchange-traded fund.

Nvidia has been a bellwether in the artificial intelligence (AI) space thanks to its graphics processing units (GPUs) that have played a crucial role in the training and deployment of AI models. But the stock has fallen out of favor of late as investors are worried about its slowing growth.

There's no question that artificial intelligence (AI) stocks have led the charge in the current bull market, but in recent months, that leadership seems to be fading. Some investors even see a potential AI bubble emerging as valuations have arguably gotten ahead of business growth.