The Q1 2024 Quarterly Market Review provides an overview of market performance in the first quarter of 2024. U.S. stocks led with a 10.02% return, outpacing international developed and emerging markets. Large growth stocks outperformed value stocks, while small caps lagged behind large caps. Real estate investment trusts (REITs) underperformed, and commodities had a mixed quarter with a 2.19% return, with energy-related commodities performing best. In the fixed-income market, interest rates increased, leading to negative returns for U.S. Treasury bonds. The review also highlights the need for diversification, using examples like BlackBerry, to show how dominant companies can be displaced over time, emphasizing the unpredictability of market leaders.