The booming US stock market, led by tech giants, raises questions about sustainability and risks tied to over-concentration and lofty valuations.

The US stock market has enjoyed a remarkable, sustained growth period, driven by the dominance of major tech companies like Apple, Microsoft, and Nvidia, as well as the AI boom. Despite attractive historical returns, the market's concentration risk and high valuations, particularly in technology stocks, present potential challenges for investors. Diversification and careful analysis of investment choices are crucial, as relying solely on past performance may lead to significant risks, especially if these tech firms falter in delivering expected growth.