Shares of computer chipmakers and other beneficiaries of the artificial-intelligence surge fell on Thursday, dragging major U.S. indexes down and tempering gains elsewhere in global markets.
Big tech pressure offsets broad gains
The S&P 500 declined by 0.5%, while the Dow Jones Industrial Average slipped 105 points (0.2%) and the Nasdaq composite lost 1.5%. The retreat came even though more stocks within the S&P 500 rose than fell — a sign that a handful of large-cap names, particularly those tied to AI hardware, exerted outsized influence on market moves.
Investors pared back positions in companies that have led this year's remarkable run. Semiconductor and memory-chip makers were notable decliners: Nvidia, the market's largest company by value, fell 2.4% and was the heaviest weight on the S&P 500. Memory firms also dropped sharply — Micron Technology fell 5.6%, Sandisk slid 12.6% and Western Digital dropped 9.2% — though each remains well up for the year so far.
Why the pullback matters
Investors have been wrestling with whether the spectacular gains in AI-related stocks are sustainable. Concerns include the possibility that prices have gotten ahead of fundamentals and that surging demand for processors and memory might not translate into the high levels of profit and productivity some forecasts assume.
- Broad earnings trends: A number of large companies nevertheless beat analysts' expectations for the latest quarter, contributing to the fact that most S&P 500 components closed higher despite the index-level decline.
- Concentration risk: Movements in a few mega-cap names continue to have a large impact on headline indexes; a small percentage move in the largest firms can offset gains across many smaller constituents.
Some individual corporate results stood out. Abbott jumped 10.7% after reporting stronger profit and raising its full-year earnings outlook. Freight firm J.B. Hunt climbed 8% after topping estimates for its quarter. Yet those positive earnings surprises did not overcome the declines in AI hardware names.
| Index | Move | Close |
|---|---|---|
| S&P 500 | −0.5% | 7,533.77 |
| Dow Jones | −105.67 | 52,552.97 |
| Nasdaq | −1.5% | 25,881.95 |
Implications for Canadian markets and investors
Canadian investors and institutions are exposed to the same headwinds. Pension funds, mutual funds and exchange-traded funds that hold U.S. large caps or concentrated AI winners can see significant mark-to-market swings. The episode highlights the narrowing set of firms that can move global benchmarks and underscores the importance of diversification for portfolios.
While chip-sector bellwethers such as Taiwan Semiconductor Manufacturing Co. reported quarterly profits above expectations — a positive indicator for the industry — the market reaction shows investors remain cautious about whether revenue and profit trends will justify current lofty valuations.
The day’s action is a reminder that even amid generally positive corporate earnings momentum, a reassessment of future earnings potential for a handful of high-flying technology names can quickly change the market narrative.
