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

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.

Amid the current artificial intelligence (AI) boom, a similar pattern could be developing. Already, several AI companies have split their shares, and more splits could be on the way among the others that are trading at lofty prices.