Musk's TSMC Talks Knock $600B Intel Down 3.18%

Elon Musk confirmed on Monday that Taiwan Semiconductor Manufacturing Co is in talks about joining Terafab, the Texas chip venture backed by Tesla, SpaceX and xAI, sending Intel shares down 3.18% to $116.19 as of 20:24 UTC today. Intel traded between $115.31 and $118.06, having fallen more than 4% before the open. TSMC's US-listed shares rose about 1% and its Taiwan-listed stock closed around 3% higher. Tesla, the venture's backer, traded at $378.73, up 6.95% on a range of $364.91 to $381.59. Musk described the TSMC talks as just discussions, adding that something may come of them.

Context — why a few words from Musk can move Intel

Terafab was announced in March as a roughly $25 billion chipmaking project in Austin, billed as the largest chip plant ever planned. It targets about 100,000 silicon wafers a month at the start, scaling eventually to around 1 million, producing chips for robots, vehicles and space applications. Around $16.8 billion has reportedly been committed to the first phase.

Intel joined in April as the only named manufacturing partner, with its 14A process, its most advanced planned production technology, designated for the facility. That made Terafab more than one customer contract for Intel. It was the most visible proof that outside companies were willing to bet on Intel's factories.

A foundry manufactures chips designed by others. TSMC is the dominant example: it builds chips for many of the world's biggest technology companies but does not sell chips under its own brand. Intel has traditionally designed and built its own processors, and under its current turnaround strategy it is also trying to become a foundry for outside customers.

That ambition is expensive. Leading-edge fabs cost tens of billions of dollars, and each new generation of manufacturing technology, known as a process node, requires heavy spending before it earns anything. A foundry needs enough orders to keep its plants busy, recover that investment and fund the next node. A large, committed customer that fills a new plant from the start is known as an anchor customer. Winning one also signals to other chip designers that a foundry's technology is good enough to rely on.

The catalyst chain is short. Musk's comments arrived after the Culpium newsletter first reported TSMC's interest on Friday, and the market repriced Intel's odds of keeping Terafab to itself. Intel's shares have roughly tripled over the past year, and the stock is reported to trade at about 71 times expected earnings.

Data — what the numbers show

Intel's foundry division generated only about $290 million in revenue from outside customers in the second quarter, while the division lost about $2.1 billion overall. Those two figures explain why Terafab carries outsized weight in the equity story: the outside-customer line is small against the loss it must eventually cover.

Metric	Value
Intel share price	$116.19, down 3.18%
Intel session range	$115.31 to $118.06
Tesla share price	$378.73, up 6.95%
Intel foundry outside revenue, Q2	about $290 million
Intel foundry division loss, Q2	about $2.1 billion
Terafab first-phase commitment	about $16.8 billion
Terafab planned initial capacity	about 100,000 wafers a month

The peer comparison is stark. TSMC's US-listed shares rose about 1% while Intel fell 3.18%, and TSMC's Taiwan-listed stock closed around 3% higher. The two foundries moved in opposite directions on the same piece of news, which is the market's way of assigning the probability of a Terafab role to each company.

According to the Culpium newsletter, which first reported TSMC's interest, the likely arrangement would see TSMC own and operate the facility, with Terafab acting as the anchor customer. That would mirror TSMC's joint ventures in Japan and Germany. The report did not disclose the terms of any agreement, and none has been signed.

The Terafab news also landed on a day when analysts estimated Intel had lost further share of the PC processor market in the third quarter, with rival AMD gaining ground.

Analysis — what it means for markets, sectors and tickers

The second-order effect runs through Intel's foundry credibility rather than its current income. If TSMC owns and operates a plant at Terafab, Intel's role could shift from sole manufacturing partner to one of two, competing for capacity at the very project meant to showcase its foundry ambitions. Analysts have warned that if Intel ends up not participating, or becomes just one of several technology providers, investors may rethink the credit they have given the company. Others have suggested TSMC could run a fab dedicated to Tesla, SpaceX and xAI.

The counter-argument is that Musk described the talks as discussions only, and nothing has been agreed. His comment that TSMC chips would likely supplement Intel's suggests Terafab's planned scale could accommodate both. A project of this size could also benefit from having two suppliers, which reduces the risk of relying on any single manufacturer.

The limitation in the bear case is timing. No formal deal exists, so the decline reflects a change in perceived probability rather than a confirmed loss of business. A valuation at roughly 71 times expected earnings means investors are paying mainly for profits they expect in the future, not for what the company earns today. Much of that expectation rests on the foundry business winning big outside customers.

Positioning follows that logic. Anyone holding Intel for the foundry turnaround is effectively long the probability that outside customers commit to its process nodes, and Terafab was the clearest evidence of that commitment. A TSMC entry into the same project dilutes the signal without removing it, which is why the stock fell while TSMC rose. AMD stands to benefit from the separate PC share shift regardless of how Terafab resolves.

Outlook — what to watch next

The key signal is whether TSMC signs a formal agreement, and on what terms. A deal in which TSMC owns and runs its own plant would raise more questions for Intel than one where it supplies a smaller share of chips. Intel's planned release this month of the design kit for its 14A process, the tools customers need to design chips for that technology, is another test of whether outside companies are ready to commit to Intel's factories.

On the tape, Intel's session low of $115.31 is the level that held through Monday's selling, with the pre-open decline of more than 4% marking the worst point of the reaction. Tesla's move to $378.73, up 6.95% and near the top of its $364.91 to $381.59 range, shows the market read the Terafab news as a Tesla-adjacent positive rather than a drag on the venture. No further dates have been disclosed for the TSMC talks or the 14A kit release beyond this month.

Frequently Asked Questions

What does the TSMC-Terafab news mean for Intel shareholders?

It changes the odds on Intel's most visible outside foundry win rather than removing it. Intel remains the only named manufacturing partner at Terafab, and no agreement with TSMC has been signed. The 3.18% decline to $116.19 reflects a lower perceived probability that Intel keeps that role exclusively, which matters because the stock trades at about 71 times expected earnings on future foundry profits.

Why did Intel stock fall while TSMC shares rose?

Intel's foundry division generated only about $290 million from outside customers in the second quarter against a $2.1 billion division loss, so outside wins carry heavy weight in its valuation. A TSMC-owned plant at Terafab would make Intel one of two suppliers rather than the sole one. TSMC, already the dominant foundry, gains another anchor customer, which is why its US-listed shares rose about 1%.