[Goldman Sachs and Barclays Warn: Last Friday's Sharp Decline in U.S. Stocks Should Not Be Easily Dismissed as a One-Off Anomaly] According to a report by Jinse Finance, on June 10, trading departments at Barclays and Goldman Sachs issued warnings that last Friday's sell-off caught investors accustomed to momentum stocks only rising off guard. However, investors should not easily dismiss it as a one-off anomaly. Crowded positions, narrow market breadth, and the prospect of interest rates remaining elevated for a longer period make U.S. equities more susceptible to sudden corrections. Goldman Sachs traders, including Lee Coppersmith, wrote in a report to clients: 'These factors collectively create an environment where the impact of factor unwinding could be far more severe than what volatility at the index level suggests.' Alexander Altmann, Barclays' Global Head of Equity Tactical Strategy, stated that after last Friday's sharp decline, volatility-controlled funds may need to reduce their U.S. equity allocations by approximately 14 percentage points. This would mark the largest single-day de-risking operation since February 6.