Sam Altman, the founder of OpenAI, has secured a spot on Forbes' prestigious list of billionaires, ranking at the 2,692nd position.

According to the financial news outlet, Altman's wealth primarily stems from his investments in startups. Notable among these is Reddit, which recently went public on the New York Stock Exchange, and Stripe, a payments company currently valued at $65 billion.

The 38-year-old entrepreneur has diversified his portfolio with investments in emerging ventures like Helion, a nuclear energy company, and Retro Biosciences, a longevity startup.

Forbes, in its estimation of Altman's fortune, took into account his holdings in prime real estate across California and Hawaii, relying on public filings and investigative reporting.

Despite his pivotal role in OpenAI, a company that has propelled him to widespread recognition and is valued at approximately $80 billion, Altman has clarified that he does not hold equity in the firm.

Taylor Swift was also formally included in the Forbes list as she boasts an estimated fortune of $1.1 billion.

Read more: Sam Altman rejoins OpenAI board after investigation

Last November, Altman was suddenly fired as CEO  and then re-employed over a several-day span as OpenAI's board communicated that it did not trust him, however, almost the entire company threatened to quit unless he was rehired.

OpenAI's financial backbone, Microsoft, which found out about Altman's dismissal moments before it was announced to the world, declared that it would employ Altman and other OpenAI employees to pioneer a new research unit. 

When OpenAI reinstated Altman, they assigned a new interim three-person board led by former Salesforce executive Bret Taylor, along with Larry Summers and Adam D'Angelo, co-founder of Quora and one of the members of the previous board who had backed Altman's removal.

Informed sources told Reuters that a letter was penned by staff researchers at OpenAI and sent to the board of directors before CEO Sam Altman's 4-day exile, warning of an artificial intelligence discovery that could threaten humanity.