TSMC clears up to $500M investment in OpenAI preferred stock

TSMC's board approved at a November 10 meeting an investment of no more than $500 million to acquire OpenAI Group PBC preferred stock. The same resolutions authorized up to $500 million for a newly formed investment company that will make strategic bets across semiconductors and the wider chip ecosystem.

The OpenAI stake comes days after the lab closed the first $11B portion of a growth round at a $1.25T valuation, and it gives the Taiwanese foundry a direct equity position. TSMC approved a parallel cap for Anthropic on the same day, tied to that company's initial public offering price. The foundry makes Apple's custom chips, while OpenAI and Anthropic are building their own processors.

For founders, compute supply is becoming an equity relationship. When a foundry holds shares in a model lab, capacity allocation and pricing can follow the cap table, so teams planning infrastructure deals should read supplier stakes as a signal of where priority access will sit.