S&P 500 Posts Worst Quarter Since Q3 2022 Amid heightened Iran tensions, growing stress in private credit, and a rotation out of AI-related names, large-cap equities struggled in Q1 2026. The S&P 500 Index declined 4.3%, marking its worst quarter since Q3 2022, while the tech-heavy Nasdaq 100 Index fell even further, down 5.8%. Meanwhile, the S&P 500 Equal Weight Index eked out a modest 0.7% gain. Despite a difficult March, other rotational pockets were able to hold onto gain

Broadening Market Leadership Persists in February Amid heightened scrutiny of AI-related capex, geopolitical tensions, and a hotter-than-expected inflation report late in the month, US large-cap equities came under pressure in February, with the Nasdaq 100 and S&P 500 declining 2.3% and 0.8%, respectively. However, market leadership continued to broaden beyond mega-caps, as the S&P 500 Equal Weight Index (+3.6%) outperformed its market-cap-weighted counterpart. International