Goldman Sachs has issued a stark warning regarding the future of the S&P 500, projecting a mere 3% annual return over the next decade, a significant drop from the 13% average of the previous ten years. The influential firm asserts that the era of substantial gains for the index has come to an end. Wall Street analysts brace for a challenging period, with the potential for a major market plunge in 2025. While some predict that the index may initially rise, sentiment is shifting, and concerns about high market concentration add to the uncertainty. Economists caution that predicting market performance over the next decade is fraught with difficulties, leading many to hope that these forecasts may prove overly pessimistic.