The technology sector had a difficult week on the stock market, with the Nasdaq Composite falling 5.52% on Thursday, 5 November. It was the index’s steepest daily decline in 19 months, as investors reconsidered the valuations of some of the biggest names in technology.
The sell-off came as concerns grew around AI spending, the returns companies can expect from their investments and the future of data centre development. Political developments following the US midterm elections also added to the uncertainty, especially around the infrastructure needed to support AI.
The market wasn’t suddenly questioning whether AI has a future. Instead, investors were reconsidering how much they were willing to pay for companies expected to benefit from it, especially when some of those future returns are still uncertain.
AI Stocks Are Facing A Reality Check
For years, expectations around AI have helped drive the valuations of major technology companies. Heavy investment in chips, data centres and other infrastructure has fuelled expectations of substantial future growth, with investors willing to pay more for companies they believe will lead the next stage of the technology boom.
However, those expectations leave little room for delays or disappointing results. David Kassir, Managing Director of Manna Wealth Management, points to the expectations already built into share prices. If future growth, capital expenditure returns or interest rates don’t match what investors anticipated, they may start reconsidering their positions.
Jacob Gurock, CFP and Wealth Advisor at Centurion Wealth in McLean, Virginia, also sees the sell-off as a reminder that valuations matter. He argues that the market had been pricing in near-flawless execution from a sector where expectations had become exceptionally high.
That doesn’t mean the companies behind the AI boom have suddenly become weak businesses. Many of the leading technology companies remain profitable and have strong balance sheets. The concern is whether their current valuations accurately reflect the revenue and returns they can eventually generate.
Dr. Daniel Schatz, a political scientist and international affairs commentator, highlights the difference between AI’s potential and what investors can actually earn from buying shares in the companies developing it. As he puts it, “The technology can succeed while some investments disappoint.”
In other words, AI could continue transforming businesses and the rest of the economy while some of the stocks associated with it struggle to justify their prices.
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AI Needs More Than Software To Keep Growing
Another issue emerging from the sell-off is the physical infrastructure required to expand AI. Data centres need enormous amounts of electricity, water, land and specialist equipment, while construction also involves planning approvals and access to critical materials.
These requirements have become increasingly relevant to investors because delays or restrictions could affect how quickly technology companies expand their AI operations.
Arnold Platz, Founder and CEO of General Future Holding, argues that markets had been treating AI largely as a software story, despite the infrastructure required to support it. He describes Thursday’s sell-off as “less a verdict on AI than a repricing of how fast it can be built”.
Political developments in the US have added another layer of uncertainty. Texas, one of the major markets for data centre development, became part of the discussion after governor-elect Gina Hinojosa pledged a moratorium on new data centre approvals until stronger protections are in place.
This is a proposal rather than an implemented statewide ban, but it highlights the potential for local and state-level decisions to affect the expansion plans of major technology companies.
Doug Greenberg, President of Pinnacle Wealth Advisory, also points to uncertainty surrounding the scale and timing of the data centre buildout. He argues that investors are having to reassess future revenue expectations when the timeline for projects becomes less certain.
For companies investing heavily in AI infrastructure, delays could affect when that spending starts generating returns. Investors will therefore be watching whether major technology firms maintain their capital expenditure plans and whether those investments begin translating into revenue.
The Magnificent Seven Can’t Carry Every Portfolio
The sell-off has also brought attention to how much exposure investors have to a relatively small group of technology companies.
The Magnificent Seven, which includes some of the biggest names in US technology, have played a major role in driving market performance. When a large portion of a portfolio is concentrated in these companies, a sharp decline across the sector can have a significant effect on its overall value.
Greenberg describes the recent movement as part of a bigger shift away from the Magnificent Seven towards a broader spread of investments across the market. He sees the sell-off as “a warning sign about concentration”.
Kassir also advises investors to avoid relying too heavily on one stock, sector or asset class. Rather than chasing shares that have already risen sharply, he suggests considering portfolio rebalancing and keeping some available capital for opportunities that may emerge during periods of volatility.
Gurock similarly recommends maintaining a diversified portfolio with measured exposure to technology. For investors, that doesn’t necessarily mean abandoning AI-related shares, but it does mean being aware of how much of their portfolio relies on the same group of companies continuing to perform.
What Should Investors Watch Next?
One difficult trading session doesn’t establish whether the technology sector is entering a longer downturn, but the coming weeks should reveal more about how these concerns affect company performance.
Schatz suggests watching earnings forecasts alongside share prices. If expectations fall while AI spending continues to rise, it could signal that returns are taking longer to materialise.
Investors will also be watching capital expenditure, AI-generated revenue, free cash flow and borrowing costs. Political decisions around data centre approvals and energy access could further affect how quickly infrastructure projects move ahead.
The AI boom hasn’t necessarily run out of road, but investors really just want to see real returns behind the promises. Companies that struggle to deliver could face further pressure.
Our Experts:
- Doug Greenberg: President at Pinnacle Wealth Advisory
- David Kassir: Managing Director, Manna Wealth Management
- Jacob Gurock: CFP and Wealth Advisor at Centurion Wealth in McLean, VA
- Arnold Platz: Founder & CEO, General Future Holding (GFH)
- Dr Daniel Schatz: Political Scientist and International Affairs Commentator
Doug Greenberg, President at Pinnacle Wealth Advisory
“Investors do not like uncertainty. As the ballots were counted Tuesday evening, it became apparent there was a shift in our country’s leadership, most apparent around the data center buildout. With its speed, magnitude and impact in question, investors reevaluated future revenue streams and began to discount them, and hence the valuations of the public companies.”
“I see it as uncertainty about timing more than a collapse in confidence in AI. Valuations were stretched, so the market had little room for a new question mark, and we could see more swings until there are better answers. It is difficult to fully ascertain the impact, as many projects are private, and in most cases policy changes won’t come until January.”
“It is a warning sign about concentration. This sell-off continues a move away from the Mag 7 toward a greater breadth of investment across the markets. In the weeks ahead, watch what incoming governors and legislatures say about data centers.”
David Kassir, Managing Director of Manna Wealth Management
“Equities have been hit by a sell off, particularly in shares related to AI and Big Tech. However, this shouldn’t come as a surprise, because expectations had been baked into share prices meaning that any potential disappointment around future growth, capex/ROI or interest rates could see investors rethinking their positions.”
“This isn’t a sign that investor faith is crumbling, as the mega-caps’ balance sheets and earnings have been excellent, but could indicate that some stocks may be overvalued.”
“Quality over hype. Long term investors, don’t chase stocks. Consider rebalancing. Make sure you’re not overly concentrated in one stock, sector or asset class. Have some dry powder so you can take advantage of good opportunities when they arise.”
Jacob Gurock, CFP and Wealth Advisor at Centurion Wealth in McLean, VA
“Thursday’s sell-off is a reminder that valuations matter, but it doesn’t tell us the AI story is broken. Corrections of this size are a normal feature of long bull markets, and this one hit a sector priced for near-flawless execution.”
“Unlike the dot-com era, though, today’s leaders are largely profitable companies with strong balance sheets, and AI adoption is spreading well beyond tech itself.”
“The test is whether heavy AI spending turns into revenue on a reasonable timeline. In the weeks ahead, investors should watch capital spending and revenue commentary in earnings, interest rates and borrowing costs, and how concentrated their portfolios have become in a few mega-cap names.”
“Volatility may continue, but for most investors the answer is a diversified portfolio with measured technology exposure, not chasing the sector or abandoning it.”
Arnold Platz, Founder & CEO of General Future Holding (GFH)
“Thursday’s sell-off was less a verdict on AI than a repricing of how fast it can be built.”
“Markets had priced AI as a software story that scales without limits. The midterms reminded investors that it is a physical story: power, water, permits and critical metals, and all of them are now politically contested.”
“When the governor-elect of Texas, one of the biggest data center markets, pledges a moratorium on new approvals, the timeline for chips, power equipment and capex stretches, and valuations built on the old timeline have to adjust.”
“I’d read it as a warning, not a collapse. In the coming weeks, watch whether hyperscalers keep their capex guidance and how state-level data center rules develop. The winners of the next phase will be the companies that solve power and materials, not only those that sell chips.”
Dr. Daniel Schatz, Political Scientist and International Affairs Commentator
“Thursday’s sell-off should be viewed as a warning about how much optimism technology valuations require. Concerns about AI spending and potential obstacles to data-centre expansion have exposed the vulnerability of companies priced for rapid, uninterrupted growth.”
“The distinction is between AI’s potential to transform the economy and the returns investors can earn at today’s prices. The technology can succeed while some investments disappoint.”
“One session cannot establish a lasting downturn, but investors should watch whether earnings expectations fall alongside share prices. In the weeks ahead, the critical signals will be companies’ spending commitments, evidence of AI-generated revenue, free cash flow and financing costs. Political scrutiny of infrastructure development also matters. Further turbulence becomes more likely if spending keeps rising while the timetable for profitable returns slips.”
