After a brief bout of nerves earlier in the week, the AI and semiconductor trade found its footing again overnight, with a familiar catalyst. Strong earnings and guidance from Taiwan Semiconductor Manufacturing Co (ADR) (NYSE:TSM) (TSMC) helped pull sentiment across the tech sector back into positive territory, lifting US equities and reigniting momentum in AI-linked stocks.
The rally was broad but not indiscriminate. Banks also contributed after solid earnings, but in tech it was the signal from TSMC — the most important node in the global chip supply chain — that carried the most weight. When the world’s dominant foundry talks up demand and commits more capital, markets tend to listen.
The S&P 500 rose about 0.5%, the Nasdaq added ground, and technology stocks led the advance after a volatile start to the week.
Earnings beat, but guidance did the heavy lifting
On the numbers alone, TSMC delivered a clean result. Quarterly profit rose sharply, margins beat expectations by a wide margin, and annual revenue topped US$100 billion for the first time. Operating leverage was stronger than forecast, reinforcing the company’s ability to scale while maintaining pricing power.
But it was guidance — not backward-looking results — that really moved markets.
Management flagged capital expenditure of roughly US$52–56 billion this year, materially above last year and well ahead of consensus expectations. Revenue growth guidance also landed comfortably above forecasts, with management pointing to momentum that extends beyond a single quarter.
That combination — accelerating investment alongside rising profitability — helped counter a growing narrative that AI-related demand might be peaking or overstretched.
Why TSMC still sets the tone for AI
TSMC’s influence goes well beyond its own earnings line. As the dominant manufacturer of advanced logic chips, it effectively sits between chip designers and hyperscalers, giving it one of the clearest views of real end demand.
When TSMC increases spending, it signals confidence that customers — particularly those tied to AI data centres — are still committing capital. When it raises margin guidance at the same time, it suggests that demand remains strong enough to absorb higher costs.
That read-through was quickly reflected in share prices elsewhere in the sector.
Spillover across the chip supply chain
The strongest reaction came from equipment and high-performance computing names. ASML surged to fresh all-time highs, with its market capitalisation pushing past US$500 billion, as investors priced in sustained demand for advanced manufacturing tools.
Chip designers also benefited. Nvidia and Advanced Micro Devices both moved higher, as the outlook from TSMC reinforced expectations that hyperscalers remain committed to AI infrastructure spending.
Importantly, the move looked less about renewed exuberance than confirmation that spending plans remain intact, with capital continuing to flow from cloud operators to chip designers and, ultimately, into manufacturing capacity.
Pushing back on the ‘AI bubble’ narrative
TSMC management also addressed a growing investor concern head-on: whether the AI boom risks tipping into overinvestment. Rather than dismissing the risk, executives framed current spending as deliberate and controlled, aimed at matching long-term demand rather than chasing short-term exuberance.
That message resonated, particularly after a week in which parts of the AI trade had come under pressure on valuation concerns. Higher margins and disciplined capital allocation helped reassure investors that this phase of the cycle still has fundamental support.
Geopolitics adds another tailwind
Meanwhile, news of a trade agreement between the US and Taiwan — including lower tariffs and significant investment commitments tied to semiconductor supply chains — added an extra layer of support for the sector.
At a time when chipmaking sits at the intersection of technology, trade and national security, any move that reduces friction or improves supply-chain visibility tends to be welcomed by markets.
What it means from here
TSMC’s results don’t remove all the risks facing the AI trade. Valuations remain elevated in parts of the sector, and expectations around data centre spending are still high. Any sign of slowing investment will continue to be closely scrutinised.
But for now, the message from markets is clear. The AI story hasn’t lost its industrial foundation — and the company with the clearest view of chip demand is still investing heavily in the years ahead.
For a sector searching for reassurance after a volatile patch, that was enough to put confidence back on the board.