Largely thanks to a wave of investor enthusiasm for artificial intelligence,

30% of the Forbes 400's total $500 billion gain in wealth over the past 12 months

came from just four people.

Oracle co-founder Larry Ellison, Meadoc co-founder Mark Zuckerberg,

and video co-founder Jensen Huang

and Dell Technologies founder Michael Dell.

Here's a list of the tech billionaires who have

gained the most in wealth since last year's Forbes 400. At number 10, Bill Gates. Like

everyone else, Gates is going all in on AI, heading a letter in March calling the technology

as revolutionary as mobile phones and the internet. In June, Gates joined a 1.3 billion dollar

funding round for AI Chatbot startup inflection about AI.

He personally invested alongside Microsoft which has been benefiting from its own early

bets on artificial intelligence including including a stake in chat

GPT developer Open AI. Shareholders are bullish too, driving up Microsoft stock by

31% over the past year.

At number nine, Rick Cohen and his family.

The billionaire behind Walmart's warehouse robots

saw his fortune rise 113% this year,

thanks mostly to soaring share prices for symbiotic, his company named for

the symbiotic relationship between warehousing and robots.

At number 8, Jeff Basis, Amazon's share price is rebounding thanks in part to higher profits and cost cutting measures, including 27,000 layoffs within the year.

So is Bezos. In May May he reportedly got engaged to Lauren Sanchez, a former L.A. TV anchor whose apparent likeness he had carved onto his new 417 foot sailing at Coru.

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