The Casual Footwear Boom Is Over. It’s Bad News for Adidas.

The boom in casual footware ushered in by the pandemic has ended, a potential problem for companies such as Adidas that benefited from the shift to less formal clothing, Bank of America says.

The casual footwear business has been on the ropes since mid-2023 as people began returning to office.

Analyst Thierry Cota wrote that while most downcycles have lasted one to two years over the past two decades or so, the current one is different.

It “shows no sign of abating” and there is “no turning point in sight,” he said.

Adidas and Nike alone account for almost 60% of revenue in the casual footwear industry, Cota estimated, so the sector’s slower growth could be especially painful for them as opposed to brands that have a stronger performance-shoe segment. Adidas may just have it worse than Nike.

Cota downgraded Adidas stock to Underperform from Buy on Tuesday and slashed his target for the stock price to €160 (about $187) from €213. He doesn’t have a rating for Nike stock.

Shares of Adidas listed on the German stock exchange fell 4.5% Tuesday to €162.25. Nike stock was down 1.2%.

Adidas didn’t immediately respond to a request for comment.

Cota sees trouble for Adidas both in the short and long term.

Adidas’ lifestyle segment, which includes the Gazelles and Sambas brands, has been one of the company’s fastest-growing business, but there are signs growth is waning.

Lifestyle sales increased at a 10% annual pace in Adidas’ third quarter, down from 13% in the second quarter.

The analyst now predicts Adidas’ organic sales will grow by a 5% annual rate starting in 2027, down from his prior forecast of 7.5%.

The slower revenue growth will likewise weigh on profitability, Cota said, predicting that margins on earnings before interest and taxes will decline back toward the company’s long-term average after several quarters of outperforming. That could result in a cut to earnings per share.

Adidas stock had a rough 2025. Shares shed 33% in the past 12 months, weighed down by investor concerns over how tariffs, slowing demand, and increased competition would affect revenue growth.

Nike stock fell 9% throughout the period, reflecting both the company’s struggles with demand and optimism over a turnaround plan CEO Elliott Hill rolled out in late 2024.

Investors’ confidence has faded following Nike’s December earnings report, which suggested that a sustained recovery is still several quarters away. Just how many remains anyone’s guess.

But if Adidas’ challenges continue, as Cota believes they will, it could open up some space for Nike to claw back any market share it lost to its rival.

Investors should keep in mind, however, that the field has grown increasingly crowded in the past five years. Upstarts such as On Holding and Hoka also present a formidable challenge to the sector’s legacy brands.

Shares of On and Deckers Outdoor , Hoka’s parent company, fell 11% and 48%, respectively, in 2025, but analysts are upbeat about both companies’ fundamentals as the new year begins.

The battle of the sneakers is just getting started.

A sharp technology sell-off has exposed a new anxiety on global markets: whether the enormous borrowing behind the artificial-intelligence infrastructure boom can generate sufficient returns as interest rates rise and Chinese competition intensifies.

The artificial-intelligence investment boom has powered technology shares, semiconductor manufacturers and data-centre operators to extraordinary heights. Last week, investors were given a reminder that much of this expansion is being built with borrowed money.

The technology-heavy Nasdaq Composite fell 4.5 per cent over the week ended October 16, its weakest performance since late June. Semiconductor shares suffered an even deeper correction, with the Philadelphia Semiconductor Index losing about 11.4 per cent.

The selling spread quickly through global markets. Micron Technology fell 14.6 per cent over the week, while South Korea’s Samsung Electronics and SK Hynix dropped approximately 18 per cent and 24 per cent respectively.

This was more than a routine bout of profit-taking. Investors were reassessing three interconnected risks: higher interest rates, the rapidly expanding debt burden attached to AI infrastructure and the prospect of stronger competition from Chinese memory-chip manufacturers.

The debt behind the AI build-out

Artificial intelligence requires a physical infrastructure network of enormous scale. Data centres must be built, advanced processors purchased, power supplies secured and cooling systems installed before customers begin generating meaningful revenue from them.

Technology companies are increasingly supplementing their own cash with corporate bonds, syndicated loans, equipment leases, private credit and project-level financing.

JPMorgan describes the emerging funding model as a combination of conventional corporate borrowing and project finance tied to individual data-centre assets. In Australia, the Reserve Bank estimates that syndicated loans accounted for approximately three-quarters of data-centre financing during 2025 and 2026 to date.

The numbers are becoming large enough to affect broader credit markets. The Federal Reserve Bank of Dallas has cited Wall Street estimates suggesting AI-related investment-grade bond issuance could approach US$300 billion in 2026 alone.

That borrowing is not automatically problematic. Debt can be an efficient way to finance long-lived infrastructure when future revenue is sufficiently predictable. The concern is that AI technology, customer demand and computing economics are changing much faster than the repayment schedules attached to the assets.

A data centre financed today may carry debt for years. Investors must therefore make assumptions about future utilisation rates, electricity prices, chip performance, customer concentration and the amount businesses will ultimately pay for AI computing.

When interest rates rise, those assumptions become less forgiving.

Inflation changes the calculation

September’s US inflation data intensified the pressure. Consumer prices increased 3.7 per cent over the year, ahead of market expectations and up from 3.4 per cent in August.

The hotter reading reduced confidence that interest rates would fall quickly and pushed bond yields higher. That matters particularly for companies whose valuations depend on profits expected well into the future, as well as highly leveraged infrastructure operators that may need to refinance.

CoreWeave has emerged as a closely watched test case. The specialist cloud-computing company has accumulated substantial debt and lease obligations to build AI capacity, while relying on a concentrated group of large technology customers.

Its shares fell sharply during the sell-off, while the cost of insuring its debt against default climbed. CoreWeave has argued that its contracted backlog more than covers its obligations and that financial markets do not always understand its business model. Nevertheless, its securities have become a proxy for investor confidence in debt-funded AI infrastructure.

Oracle, another major investor in AI computing capacity, fell 8.8 per cent in Friday trading, while CoreWeave dropped 15.5 per cent.

The question is shifting from how much AI infrastructure can be built to how profitably it can be operated.

China adds another source of pressure

Interest rates were not the only catalyst. Reports of advances by Chinese memory-chip producer ChangXin Memory Technologies raised concerns that lower-cost Chinese products could increase competition across the global semiconductor industry.

Memory chips are essential to AI systems, but the industry is historically cyclical. Periods of tight supply and high pricing can encourage rapid investment, eventually producing oversupply and falling margins.

The prospect of a well-funded Chinese competitor expanding its technological capabilities unsettled investors in Samsung, SK Hynix and Micron. It also demonstrated that AI-related demand does not insulate chipmakers from conventional competitive pressures.

That combination—slower rate cuts, more expensive financing and potentially cheaper supply—challenged the assumption that every company exposed to AI would enjoy continually expanding margins.

A reset rather than the end of the boom

The sell-off does not establish that the AI boom is ending. Demand for computing power remains strong, the largest technology companies continue to generate formidable cash flows and many infrastructure projects are backed by long-term customer contracts.

What has changed is the market’s willingness to overlook the price and financing structure of that growth.

The most resilient companies are likely to be those able to fund investment from operating cash flow, secure long-duration customers and demonstrate that new capacity will earn returns comfortably above its financing costs.

More speculative operators may face greater scrutiny, particularly where debt is expensive, customers are concentrated or expected revenue depends on demand that has not yet materialised.

For Australian investors, the lesson extends beyond US technology shares. Local data-centre operators, infrastructure funds, electricity suppliers and property groups are increasingly exposed to the same investment cycle.

Artificial intelligence may remain one of the defining growth themes of the decade. But last week’s correction showed that enthusiasm for the technology does not eliminate financial discipline.

The next stage of the AI boom will be judged not only by computing power, model performance or demand for chips, but by something more traditional: whether the assets being financed can generate enough cash to repay the money borrowed to build them.

Fact box

Nasdaq Composite: Down 4.5 per cent for the week ended October 16, 2026

Philadelphia Semiconductor Index: Down approximately 11.4 per cent

Micron Technology: Down approximately 14.6 per cent

Samsung Electronics: Down approximately 18 per cent

SK Hynix: Down approximately 24 per cent

US September inflation: 3.7 per cent annually

Estimated 2026 AI-related investment-grade issuance: Approximately US$300 billion