US equities began the week on a softer note, with the major indexes retreating in relatively quiet trading. The S&P 500 declined by 0.7%, reflecting a cautious tone across markets as investors reassessed positioning ahead of key macro and geopolitical events later this week, including a closely watched tariff deadline.

Beneath the surface, the market’s rotation revealed an increasingly defensive stance. Investors favored sectors traditionally seen as safer in uncertain times, such as utilities, healthcare, and consumer staples, while more economically sensitive cyclical sectors lagged. This shift suggests that investors are looking to reduce risk exposure, preparing portfolios for potential volatility in the coming days.

On a factor basis, stocks characterized by high “quality” fundamentals—strong balance sheets, consistent earnings, and stable cash flows—outperformed. These quality names rose approximately 1.1%, contrasting sharply with the more speculative and volatile segments of the market, which lost ground. Volatility-sensitive stocks fell by around 1.6%, indicating a flight to stability.

One of the most notable areas of weakness came from technology stocks linked to the artificial intelligence boom. Companies perceived as leaders in AI innovation, which have driven much of the market’s gains in recent months, faced selling pressure. Semiconductor stocks, crucial to powering AI systems, led the decline, sliding 1.3%. This pullback suggests that investors may be booking profits after the sector’s substantial run-up, or growing more cautious about near-term earnings or demand headwinds.

Despite the broader tech weakness, some areas of the energy and industrials space showed resilience. Power-related stocks outperformed modestly, helped in part by positive sentiment around companies positioned to benefit from long-term energy demand trends. For example, a major Wall Street firm initiated coverage on GE Vernova, highlighting its potential to capitalize on the rising need for electricity to support the expanding footprint of AI data centers. The firm projected a possible 20% upside for the stock, citing its exposure to this secular growth trend.

Elsewhere in the market, stocks that have been popular among short sellers—companies where traders bet on share price declines—also saw notable activity. Many of these high short-interest names have staged an impressive rally since April, climbing as much as 55%. However, today’s action showed investors locking in gains, as these names collectively declined around 2.1%, suggesting a bout of profit-taking.

Monday’s market action reflects a more defensive tone, with investors adjusting exposures ahead of upcoming policy and geopolitical catalysts. As semiconductor weakness weighs on the AI trade and cyclicals lag defensives, the market appears to be bracing for a potentially volatile stretch in the days ahead.