Oracle co-founder, Larry Ellison, Meadow co-founder of 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.ai.

He personally invested alongside Microsoft, which has been benefiting from its own early bets on artificial intelligence including a stake in chat GPT developer OpenAI.

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 Symbotic, his company, named for the symbiotic relationship between warehousing and robots.

At number eight, Jeff Bezos.

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, he reportedly got engaged to Lauren Sanchez, a former La TV anchor whose apparent likeness he had carved onto his new 417-foot sailing yacht Kuru.

At number 7 Steve Ballmer.

The former CEO of Microsoft is mostly focused on the LA Clippers these days, including spearheading construction of a 2-billion-dollar Ultra Lux new arena for that NBA team.

But he still owns enough Microsoft stock to push his net worth up. An estimated 18 billion dollars this year.

At number six, Sergey Brin and number five, Larry Page.

Google's 25th anniversary year was lucrative one for co-founders Paige and Brynn.

They're each 21 billion dollars richer this year thanks to a 26% jump in the shares of Google parent Alphabet.

Brin is also turning his Focus to AI, returning to the Tech Giant in his most hands-on role in years working on Google's AI efforts.

Page and Brin both stepped down from day-to-day rules in 2019 but remained on Alphabet's board.

At number 4, Michael Dell.

Largely thanks to an insatiable demand for servers from AI companies and possible inclusion in the S&P 500, shares of Dell Technologies are up 87 since last year.

Dell is also in line for a potential 20 billion-dollar payday in October when Dell's cloud computing spin-off VMware is set to sell to semiconductor giant Broadcom for 61 billion dollars after receiving regulatory approval in August.

At number three, Johnson Hong.

The Taiwan-born Oregon State graduate founded Nvidia in 1994, took it public in 1999 and has the company logo tattooed on his arm.

Nvidia produces more of the chips used for AI systems than pretty much anyone else.

As such shares are up more than 200% since last year's Forbes 400 and optimistic analysts say the newly crowned trillion-dollar company doesn't show signs of slowing down anytime soon.

At number two, Mark Zuckerberg.

After a terrible 2022 for Meta with the collapsing share price crumbling profits and substantial fourth-quarter layoffs, a share price U-turn boosted Zuckerberg's fortune by nearly 50 billion dollars this year to 106 billion.

And at number one, Larry Ellison.

In absolute terms no one in America has gotten richer this year than Ellison, who is 57 billion dollars better off after a 47% rise in shares of his software firm, Oracle.

In June, Ellison, the company's founder, chief technology officer, and 40% shareholder, took the opportunity to cash out about $640 million pre-tax worth of stock options—the first time he sold shares in two years."