TSMC's Board Approves Up to $1 Billion in Direct Stakes in Anthropic and OpenAI, Tied to Anthropic's IPO Price

Taiwan Semiconductor Manufacturing Co., which fabricates the vast majority of the AI industry’s advanced chips, is becoming a direct shareholder in two of its biggest customers. On Nov. 10, 2026, TSMC’s board approved an investment of up to $500 million to buy Anthropic common shares at Anthropic’s initial public offering price, plus up to $500 million to buy OpenAI preferred stock, according to TSMC’s Form 6-K filed with the SEC.

The filing lands on the same day Anthropic priced its IPO at $70 to $78 per share, targeting a valuation of up to roughly $1.4 trillion — among the largest stock-market debuts on record, according to Reuters reporting carried by Investing.com. Anthropic is scheduled to list on the Nasdaq under the ticker ANT on Nov. 19, with the offering expected to raise up to $64.35 billion. The pricing follows Anthropic’s move to formal IPO marketing after an earlier filing misstep, and it comes while OpenAI is separately racing to close roughly $30 billion in new funding at a similar valuation before Anthropic’s debut.

What the board actually approved

The 6-K bundles the Anthropic/OpenAI stakes with several other resolutions passed at the same meeting:

Resolution	Amount
Anthropic common shares, at Anthropic’s IPO price	Up to $500 million
OpenAI preferred stock	Up to $500 million
New investment company for strategic semiconductor-ecosystem bets	Up to $500 million
2027 capital appropriations (fabs, advanced packaging, R&D)	Approximately $40.93 billion
Q3 2026 cash dividend	NT$9.00 per share, up from NT$7.00

TSMC’s third-quarter 2026 results, also approved at the meeting, showed consolidated revenue of NT$1,494.24 billion and net income of NT$763.06 billion — continuing a run of record profitability that Reuters and Ars Technica both describe as TSMC’s sixth consecutive quarter of record earnings, with the company reporting more than $23 billion in profit for the July-September period.

Why a foundry buying into its own customers matters

TSMC is not primarily an AI investor; it is the fabrication plant behind nearly all of Nvidia’s AI data-center GPUs and most of Apple’s custom silicon, operating principally in Taiwan with expanding fabs in Arizona, Japan, Germany and elsewhere. Anthropic and OpenAI, in turn, are among the largest buyers of the chips TSMC’s customers build from its wafers. A $1 billion equity stake — split between an IPO-priced common-stock purchase in Anthropic and a preferred-stock purchase in OpenAI — formalizes a financial relationship that was previously confined to the supply chain: the company that manufactures the hardware now also owns a slice of the companies that consume it.

As Ars Technica’s Jeremy Hsu reports, the Wall Street Journal framed the move as potentially giving markets “a shot of confidence as the artificial-intelligence trade shows signs of strain,” but analysts cited by the Journal also warned that this kind of circular financing among investors, suppliers and customers makes it harder to judge genuine demand for AI hardware and services versus demand created by the financing arrangements themselves. TSMC’s stake sits alongside other disclosed backers in Anthropic’s parallel $26 billion private placement, including Alphabet, Nvidia, AMD and Microsoft, according to the same Reuters account. The financing web runs both directions: Google has separately agreed to backstop roughly $19 billion of Anthropic’s Kentucky data-center leases, tying the cloud provider’s balance sheet to the same AI buildout TSMC’s chips supply.

The circular-financing concern is not confined to analyst notes. Senator Elizabeth Warren pressed Anthropic in writing to answer the existential-risk warnings in its own IPO prospectus before its public debut, a reminder that regulators and lawmakers are watching the same leverage-and-concentration dynamics that TSMC’s new stake adds to.

Scale, relative to the rest of the AI investment web

Even at $1 billion, TSMC’s commitment is modest next to other chip-and-cloud players’ stakes in the same two labs. Ars Technica notes Nvidia alone has already invested $30 billion in OpenAI and $10 billion in Anthropic, on top of tens of billions more across other AI and robotics startups. What makes TSMC’s move distinct is not its size but its position in the stack: unlike Nvidia, Microsoft or Google, TSMC does not sell AI models, cloud capacity or chip designs — it sells fabrication capacity whose demand TSMC itself says continues to outstrip supply. Taipei Times reports TSMC’s October consolidated sales rose nearly 60% year-over-year, and the company’s full-year 2026 revenue is tracking to roughly 44% growth.

Markets reacted immediately. Benzinga reported TSMC’s U.S.-listed shares rose 1.54% after hours on the news, following a 2.02% gain in the regular session to close at $396.48, with TSMC’s market capitalization standing at about $1.80 trillion.

What to watch next

The Anthropic leg of the deal is self-executing once pricing is final: TSMC’s $500 million simply buys shares at whatever price Anthropic’s banks set in the $70-$78 range when the IPO completes on Nov. 19. The OpenAI leg is less mechanical — OpenAI has pushed any public listing to 2027 at the earliest, so TSMC’s $500 million buys preferred stock in a private company whose valuation benchmark is still being negotiated in OpenAI’s own ongoing fundraising. For operators tracking the AI capital stack, the filing is a reminder that the hardware layer and the model layer are increasingly the same balance sheet — a dynamic worth weighing alongside Anthropic’s IPO roadshow, OpenAI’s parallel fundraising race, Google’s Kentucky backstop, and the political scrutiny already aimed at Anthropic’s own risk disclosures.