Taiwan Semiconductor Manufacturing Company (TSMC) has approved investments of up to $500 million each in Anthropic and OpenAI, deepening the chipmaker's ties to the two artificial intelligence companies whose models drive demand for its most advanced chips.

TSMC's board approved the two investments at its meeting on Tuesday, 10 November 2026, according to the company's filing with the United States Securities and Exchange Commission. The Anthropic purchase is for common shares at the company's initial public offering price, capped at $500 million, while the OpenAI purchase is for preferred stock in OpenAI Group PBC, also capped at $500 million.

The figures are ceilings approved by the board, not completed purchases. TSMC's filing gives no share count, valuation or timetable for the OpenAI investment, and the Anthropic purchase depends on an offering price that has not yet been set.

Part of a $26 billion Anthropic placement

Anthropic's amended registration statement, filed with the SEC on the same day, lists TSMC Partners Ltd among seven companies that have agreed to buy non-voting Class N common stock at the offering price as part of a $26.0 billion private placement. The other buyers are Google, Nvidia, AMD, Broadcom, Micron and Microsoft.

At the $74 midpoint of Anthropic's $70 to $78 price range, TSMC Partners would buy 6,756,756 shares for about $500 million, the filing shows. Anthropic is expected to price its shares on 18 November and begin trading on the Nasdaq on 19 November, according to CNBC reporting cited by Tech Times.

The move is striking because Anthropic's own filing names TSMC as a concentration risk for its chip supply. The world's largest contract chipmaker makes the advanced processors that Anthropic, OpenAI and other AI developers depend on, so TSMC is now set to become a shareholder in two of its biggest end customers.

$40.93 billion for new capacity

The same board meeting approved capital appropriations of about $40.93 billion for long-term capacity plans, including advanced-technology capacity, advanced packaging, fab construction and research and development spending in 2027, according to The Edge.

Directors also approved up to $500 million to set up an investment company for strategic investments in the semiconductor industry and its ecosystem, and raised the quarterly cash dividend to NT$9.0 a share from NT$7.0, an increase of 28.6 per cent. The meeting also approved TSMC's third-quarter financial statements, with revenue of NT$1,494.24 billion and net income of NT$763.06 billion, figures first released on 15 October.

Shares rise in Taiwan

TSMC shares rose in Taiwan on Wednesday, gaining 3.72 per cent to NT$2,370 by midday and helping lift the TAIEX index by 2.62 per cent, as Asian chip stocks rebounded after a sell-off. The board's decisions underline how closely TSMC's fortunes are now tied to the AI boom: its factories supply the chips, its capital spending builds the capacity, and it is now putting its own money into the companies creating the demand.

Whether the Anthropic stake goes ahead at the full $500 million will depend on the final IPO price. For now, the board's approval signals that TSMC sees its relationship with the leading AI developers as a strategic investment, not just a customer order.

Sources: The Edge; Tech Times. Investment figures are board-approved caps, not completed purchases. This article is for information only and is not investment advice.