Three reasons why UBS downgraded the US tech sector for 2026

The US tech sector hit a speed bump this week as UBS experts lowered their view from “attractive” to “neutral”.

While the broader market remains fixated on AI’s transformative potential, UBS sees the road ahead as fraught with concerns of massive infrastructure spending and the looming threat of industry adoption.

Its analysts offered three big reasons for their newfound caution, which serve as a sobering reminder that even the most powerful secular trends eventually face the gravity of valuation and competitive reality.

AI may prove a threat to the software industry

UBS analysts downgraded the US tech sector mostly on growing anxiety that AI is evolving from a helpful assistant into a likely replacement for traditional software.

The recent market turbulence was punctuated by Anthropic’s release of sophisticated tools capable of managing professional workflows – abilities that constitute the bread and butter of many legacy software firms.

According to the investment firm, “software uncertainty could linger” as AI-powered models begin to encroach on established territories.

Liontrust’s head of global equities, Mark Hawtin, echoed this sentiment in a recent CNBC interview, noting “the amount of revenue being generated by AI at the moment does not stack up relative to the amount being spent.”

This mismatch makes it increasingly difficult for investors to feel confident about the growth rate and profitability of pure-play software names.

AI capital expenditures are unsustainable

Beyond software, UBS analysts are waving a red flag over the staggering costs of the AI arms race.

The “Magnificent Seven” are pouring astronomical sums into data centres and hardware, with the largest four hyperscalers – Google, Microsoft, Amazon, and Meta Platforms – projected to spend about $700 billion this year alone.

UBS described this level of capital expenditures as an “overhang” – pointing out that much of this spending is being fuelled by “external debt or equity financing”.

In fact, Amazon’s latest guide for $200 billion in capex could even lead to negative free cash flow, Hawtin told CNBC.

“As an investor, if I’m being offered $60 billion of cash flow today versus some cash flow in the future as a result of that spending, that creates uncertainty, and I should pay less for that,” he added.

Overvaluation remains an overhang

Finally, UBS analysts downgraded the US tech sector on the belief that tech hardware prices have now reached a ceiling.

Following a massive rally, they argue “tech hardware valuations look full”, leaving little room for any further upside.

According to the investment firm, stocks are now becoming “prohibitively expensive” – losing the favorable risk-reward profile they held during the early stages of the AI boom.

As the market shifts toward a “show me the money” phase, the premium paid for hardware firms is coming under intense scrutiny.

Therefore, UBS is urging a move toward “diversified business models”, recommending investors rotate their capital into more defensive or undervalued sectors such as healthcare, utilities, or banks.

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