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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.

That massive gain was largely driven by the rapid expansion of the artificial intelligence (AI) market, which drove many companies to ramp up their purchases of the company's data center graphics processing units (GPUs) to process complex machine learning and AI applications.

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