The short version
● Approved Up to $500M each into OpenAI and Anthropic.
● Board date 10 November 2026.
● Structure Preferred stock in OpenAI, IPO-priced common in Anthropic.
● Also approved A separate $500M semiconductor investment vehicle.
TSMC's board approved investment ceilings of up to $500 million each in OpenAI and Anthropic on 10 November, a combined $1 billion, with a third $500 million resolution for a separate investment company focused on semiconductor and ecosystem bets. That takes the board's total authorisation across all three to $1.5 billion.
The two stakes are structured differently. TSMC takes preferred stock in OpenAI Group PBC. For Anthropic it buys common shares at the IPO price, and an amended S-1 filed the same day names TSMC Partners, Ltd. as one of seven buyers in the $26 billion concurrent private placement. That purchase depends on the IPO completing and closes immediately after the offering.
A board ceiling authorises purchases rather than confirming them, and TSMC's release gives no completion dates or final ownership percentages for either company. Separately, TSMC is reported to be setting up a $500 million venture fund for emerging fabless chip designers. Both ChatGPT and Claude are listed in the directory.
FAQ
How much did TSMC approve?
Up to $500 million each for OpenAI and Anthropic, plus $500 million for a separate investment company. $1.5 billion in total authorisation.
Has TSMC actually bought the stakes?
Not confirmed. The board resolution sets ceilings and authorises purchases; it does not confirm completed transactions.
What does TSMC get in each company?
Preferred stock in OpenAI. In Anthropic, Class N common shares bought at the IPO price through the concurrent private placement.