Wall Street closed a volatile week on a mixed note, with investors rotating out of high-growth technology stocks and into defensive sectors as shifting oil prices, geopolitical developments and concerns over valuations reshaped market sentiment.
For the week of June 22 to June 27, the tech-heavy Nasdaq Composite tumbled about 4.6%, marking its weakest performance among the major US indices. The S&P 500 fell 2.0%, while the Dow Jones Industrial Average outperformed, rising 0.6% as investors favoured value-oriented and defensive stocks.
The week’s defining theme was a sharp rotation away from mega-cap technology companies and semiconductor stocks that had powered markets higher in recent months.
Selling pressure emerged early in the week after oil prices retreated following the US government’s decision to allow Iran to continue selling oil in US dollars, including to American buyers. The move eased concerns over potential supply disruptions through the Strait of Hormuz, reducing immediate inflation fears and supporting economically sensitive and defensive sectors.
While lower oil prices initially provided relief to broader markets, they also accelerated the shift away from growth stocks. On June 22, the Nasdaq dropped more than 1.3% even as the Dow advanced, highlighting the growing divergence between technology shares and more traditional sectors.
The technology selloff intensified as investors reassessed lofty valuations following months of AI-driven gains.
SpaceX became one of the week’s biggest casualties, falling 16% on June 22 before briefly trading below its debut price later in the week, adding to pressure across growth-oriented counters.
Alphabet also endured its sharpest single-day decline in more than a year, dropping about 5% as investors questioned whether optimism surrounding artificial intelligence had become overly stretched.
Semiconductor stocks remained at the centre of market attention throughout the week. Although chipmakers staged intermittent rebounds during stronger sessions, the sector still finished sharply lower as investors reduced exposure following an extended rally.
The contrasting performances of the major indices reflected the market’s broader sector rotation. While technology and semiconductor stocks dragged the Nasdaq lower, capital flowed into healthcare, utilities and other defensive industries, helping the Dow outperform despite heightened market volatility.
Geopolitical developments surrounding Iran remained another major influence throughout the week.
Progress in diplomatic discussions initially eased concerns over disruptions to global oil supplies and supported hopes that inflation pressures could moderate. However, crude prices later rebounded above US$70 a barrel, reminding investors that any deterioration in Middle East tensions could quickly reignite inflation concerns and complicate expectations for US Federal Reserve policy.
Market participants said the week’s sharp rotation underscored the importance of portfolio diversification after concentrated exposure to AI and semiconductor stocks left many investors vulnerable to the sudden reversal in sentiment.
Looking ahead, investors are expected to remain focused on developments in the Middle East, movements in crude oil prices and upcoming economic data that could influence the Federal Reserve’s interest rate outlook, while corporate earnings from major technology companies will be closely watched for signs that AI-driven growth remains intact despite recent market turbulence.
