Wall Street ended the week in a celebratory mood. The S&P 500 closed less than half a percent below its all-time high — just 0.45 percent separates the benchmark from its next record — and it is up 10.7 percent for the year. The “Magnificent Seven,” the mega-cap technology names, led last week’s advance with a 4.9 percent gain. It looks like the perfect continuation of a bull market that shrugs off every setback. But appearances deceive. The real test arrives this week, and it comes not from a central bank, not from a tariff deadline, but from two boardrooms in Veldhoven and Hsinchu.
On Wednesday, the Dutch company ASML reports its quarterly results; on Thursday, Taiwan’s chip foundry TSMC follows. Together these two companies form the foundation on which the entire artificial-intelligence boom rests. No Nvidia chip, no AI data center, no large language model exists without ASML’s machines and TSMC’s fabs. Anyone who wants to know whether the most expensive investment cycle in the history of technology is still running — or has just passed its peak — should not listen to the chip sellers. They should look at the order books of these two suppliers. And those books get opened this week.
Why these two companies deliver the verdict
In the public imagination, Nvidia is the face of the AI revolution. But Nvidia only designs its chips; it cannot build them. That job belongs to TSMC, by far the world’s largest contract manufacturer, which produces virtually every high-end AI processor, whether it originates with Nvidia, AMD, Apple, or Broadcom. And TSMC, in turn, can only make those chips because ASML supplies the lithography machines required to etch them. ASML is the sole maker of extreme-ultraviolet lithography systems on the planet — a monopoly at the absolute choke point of modern semiconductor manufacturing. A single one of these machines costs several hundred million dollars.
This supply chain has an important property: it runs ahead of demand. A data-center operator ordering more AI capacity today sets off a chain that reaches back months — TSMC must build out fabrication capacity, and to do that TSMC must order machines from ASML years in advance. That is precisely why ASML’s net bookings are such a valuable leading indicator. They reveal not what customers are buying today, but what they are planning for the years ahead. A strong order book means the buildout continues. A collapsing one would be the first hard signal that the industry is easing off the accelerator. No analyst note, no survey, no price chart carries that kind of information.
The rollercoaster that set the stage
The reason these numbers are so charged this particular week lies in the past two months. The semiconductor sector has just been through one of the most violent rollercoaster rides in its recent history, with Nvidia at the center of it. The AI champion shed roughly one trillion dollars in market value in less than two months. Since its record high on May 14, the stock has fallen 18.2 percent to a recent 193.42 dollars. That leaves the most valuable company of the AI era trading at about 18 times its expected earnings for the next twelve months — cheaper than the broad S&P 500, which sits above 20 times, and cheaper than the Nasdaq 100 at nearly 23 times. Nvidia has not been this inexpensive since early 2019, before the AI boom truly began.
The trigger for the slide was a phrase that has been circulating on markets for weeks: “AI peak demand.” The fear is that the gargantuan spending of the hyperscalers — Microsoft, Amazon, Google, Meta — cannot continue at this pace forever, that saturation will eventually set in and orders will abruptly dry up. Yet no sooner had that anxiety embedded itself in prices than the counter-move arrived. Last week the big tech names shot higher again, led by those same Magnificent Seven. The market is undecided: is the boom breaking, or was the pullback merely a healthy pause? It is straight into this stalemate that the numbers from ASML and TSMC now land. They are the referee both camps have been waiting for.
ASML on Wednesday: the choke point speaks
For ASML, the consensus pencils in net sales of between 8.4 and 9.0 billion euros and a gross margin of 51 to 52 percent, with expected earnings per share of around 8.03 euros. But those figures are secondary. Three variables will decide the reaction: net bookings, the outlook for the China business, and anything management says about the new High-NA EUV generation.
Bookings are the number that towers over all others. For context, in the fourth quarter of 2025 ASML booked net new orders of 13.2 billion euros — of which 7.4 billion were for EUV systems alone — and its backlog reached 38.8 billion euros. If orders this quarter arrive at a comparable level, the peak-demand thesis is off the table and the industry is building out unchanged. If they fall back sharply, the bear camp gets its first tangible argument. Already in the prior quarter, ASML delivered 8.8 billion euros in revenue at a 53.0 percent gross margin, finishing at the top end of its own guidance, and it raised full-year guidance from 34–39 to 36–40 billion euros. Chief Executive Christophe Fouquet attributed the revision to customers accelerating their capacity plans. If that tone is confirmed, it would be a powerful signal. The risk lies in China: tighter export restrictions could weigh on a meaningful chunk of the business, and with a stock this richly valued, even a margin disappointment could trigger a sharp correction.
TSMC on Thursday: the foundry’s verdict
A day later, attention turns to Taiwan. TSMC has guided to second-quarter revenue of between 39 and 40.2 billion dollars — a gain of roughly ten percent over the prior quarter and an enormous leap from the 30.07 billion dollars of the year-ago quarter. Gross margin is projected between 65.5 and 67.5 percent, supported by high fab utilization and only lightly dented by the costly ramp of new overseas plants. Here too, the headline revenue is not the decisive part. Investors are waiting for three things: the outlook for the second half, a possible upward revision to full-year guidance, and above all any increase to the 2026 capital-expenditure budget.
Because TSMC’s capex budget is, in effect, the order that lands at the other end at ASML. If TSMC raises its planned investments, that is the strongest conceivable evidence that demand for AI computing power is unbroken. Special attention also falls on the advanced packaging technology known as CoWoS, without which the giant AI accelerators cannot be built at all — here TSMC has been the bottleneck for months. Management is also likely to emphasize the transition from generative to so-called agentic AI, in which systems no longer merely respond to prompts but autonomously carry out tasks. That shift raises the compute requirement per data center still further — and it is the structural argument for why the boom need not be over.
The rotation beneath the surface
While the headlines stare at Nvidia, a remarkable shift has long been under way beneath the surface of the semiconductor sector. Investors did not simply flee chips — they switched. Money flowed out of the graphics processors, out of Nvidia, and into the memory makers. The big winner is Micron: the stock has already gained 229 percent in 2026, and that on top of a 239 percent surge in 2025. The reason is straightforward: AI accelerators require enormous quantities of high-end memory, the so-called high-bandwidth memory. Demand for these chips has gone from a sideshow to the actual bottleneck.
This rotation explains an apparent paradox — the broad chip index is strong even as its most prominent single name sags. The Philadelphia Semiconductor Index, the sector’s key barometer, is up 74 percent in 2026 and on pace for its best year since 2003. The AI trade, in other words, has not died; it has merely changed leaders. For investors, that carries an important lesson: the question is rarely whether a megatrend is intact, but which part of the value chain is currently making the money. And that is exactly why the ASML and TSMC numbers are so revealing. They sit at a point in the chain that this rotation leaves untouched. Whether the money flows into GPUs or into memory, both must be fabricated at TSMC and etched with ASML machines.
The stocks caught in the crossfire
For investors looking to position around this week, the ecosystem is broad. Nvidia itself is the obvious lightning rod, and the coming numbers will decide whether its reset to 18 times earnings marks a bargain or a warning. But the derivatives of the same story run wider. AMD is the second-source challenger in AI accelerators; Broadcom builds the custom silicon and networking chips that stitch the data centers together; and Micron embodies the memory rotation described above. On the equipment side sit Applied Materials and Lam Research, the American toolmakers that, alongside ASML, supply the machinery for every new fab. And the American depositary receipts of ASML and TSMC give U.S. investors direct exposure to the two companies whose order books matter most this week.
The key point is that these names are not interchangeable bets on the same trade. They occupy different rungs of the ladder — design, memory, packaging, equipment, foundry — and they respond differently depending on where the money is rotating at any given moment. An investor who understood in June that memory was outrunning GPUs would have captured Micron’s run while Nvidia bled. That is why the supplier layer is so instructive: TSMC and ASML sit beneath all of these rungs at once, which makes their guidance the cleanest read on the health of the entire structure rather than one slice of it.
The risks you cannot ignore
As tempting as the prospect of strong numbers is, the counterarguments deserve to be taken seriously. First, the valuation reset. That Nvidia now trades at 18 times expected earnings is, on one hand, a sign that a great deal of euphoria has already been priced out. On the other, it was precisely the boundless valuation fantasy that carried the sector for years — and that does not return simply because one earnings report comes in well. Second, the central bank. U.S. rates remain at 3.50 to 3.75 percent, and the new Fed chair, Kevin Warsh, has abolished the central bank’s traditional forward guidance and shifted policy to pure data dependence. The next rate meeting, on July 28 and 29, comes without updated projections — so uncertainty over the rate path stays high, and richly valued growth stocks are especially sensitive to it.
Third, trade policy. Semiconductors fall under the Section 232 sectoral tariffs, and the persistent uncertainty over the future architecture of U.S. tariffs casts a shadow over the entire supply chain. And fourth, very concretely for this week: on July 14, before the chip numbers even arrive, come the June consumer-price index and the earnings of the big U.S. banks. A hot inflation print could sour the mood before ASML so much as opens its books. The chip results, then, do not land in calm waters but in a week already loaded with flashpoints.
The one number that matters
In the end, the entire week can be distilled into a single figure: ASML’s net bookings. It is the most honest available glimpse into the future of the AI boom, because it shows what the whole industry is planning for the years ahead and not merely what it has already sold. If that number lands on or above the level of recent quarters, the fear of a demand peak is refuted for now, and the rally should have solid ground beneath it. If it falls back noticeably, the bear camp gets, for the first time, an argument that cannot be waved away with a one-day pop in the share price.
For investors navigating this mix, one principle stands above the rest: do not fixate on the noise around individual stocks; watch the structure of the supply chain. The AI boom is not monolithic — its center of gravity migrates, from GPU maker to memory producer, and tomorrow perhaps somewhere else again. Whoever is invested at the base of the chain, where every chip must pass, is best hedged against these rotations. This week, ASML and TSMC will tell us whether that base holds. Everything else is noise.
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