According to Odaily, OpenAI CEO Sam Altman has invested in over 400 companies, with the value of his shares in these companies amounting to at least $2.8 billion. Despite not holding any shares in OpenAI, Altman is one of the most prolific individual investors in Silicon Valley. His net worth recently surpassed the $2 billion mark.

Altman's annual salary at OpenAI is approximately $65,000. However, he does not own any shares in the company. His investments span across various sectors and include companies such as payment company Stripe, short-term rental platform Airbnb, social news forum Reddit, and Elon Musk's brain-computer interface company Neuralink.

As of the beginning of this year, the value of the shares he holds in these companies is at least $2.8 billion. Altman's investment strategy and portfolio demonstrate his significant influence and reach in the tech industry.