S&P 500 Falls as AI Trade Splits, Small Caps Gain, Oil Drops

The S&P 500 declined this week amid weakness across mega-cap and AI-linked names, as a growing divide within the AI trade emerged. Hyperscalers and software stocks came under pressure while memory and chip suppliers saw sharp swings, reflecting uncertainty about the pace of AI spending. Despite the index weakness, market internals held firm, with eight sectors finishing higher and small caps outperforming, suggesting a broadening rally beneath the surface.

For energy traders, the rotation into Healthcare and Financials accelerated alongside falling oil prices and easing bond yields. Lower crude prices reduce input costs for many sectors but pressure energy stocks and producers. The shift in Fed expectations, with markets pricing in a higher probability of rate cuts, also supported risk appetite outside of tech. Traders can check NowPrice's fuel page for current gasoline and diesel pricing context as crude volatility persists.

Looking ahead, focus turns to quarter-end portfolio rebalancing, key payrolls data, and evolving AI spending trends. The divergence between mega-cap tech and the broader market will be a key theme to watch, as will any further moves in oil prices driven by demand concerns or OPEC+ signals. The coming weeks could determine whether the rotation into value and cyclical sectors has further room to run.