Today's biggest AI stocks will likely be much bigger by the end of the decade.

Imagine a stack of $1 bills that reached from the Earth's surface to the moon and almost all the way back to the Earth. That's how incredibly large $7 trillion is. No company on the planet has a market cap that big.

However, I think that will change in the not-too-distant future. In fact, I predict that at least four artificial intelligence (AI) stocks will be worth more than $7 trillion by 2030.

1. Nvidia

Nvidia ( NVDA 1.68% ) is the easiest pick. The giant GPU maker is already the world's highest-valued company with a market cap of $4.5 trillion. To make it to $7 trillion within the next five years, Nvidia would only have to grow by a little over 9% annually.

While there are no guarantees in in

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