“2007年量化地震”重演？散户逼空潮来袭，美国量化基金遭遇5年来最大回撤！

Group 1 - Quantitative funds faced their worst monthly loss in nearly five years, with a cumulative loss of 3.6% in July and a 5% decline since early June [1] - High volatility stocks, crowded long positions, and momentum trading were identified as the main factors dragging down the performance of quantitative funds [1] - Retail investors have returned to high short-interest stocks, driving a new round of short squeezes, which further exacerbated the drawdown of quantitative strategies [1] Group 2 - The "most short vs. least short" combination from Goldman Sachs rose by 2%, marking the best monthly return since January 2021, with significant retail participation in high short-interest stocks [3] - Stocks like Kohl's saw increases of over 100%, reminiscent of the meme stock era, with the Russell 2000 index significantly outperforming its peers during the previous meme stock surge [3][6] - Historical data indicates that when momentum strategy volatility reaches high levels, it typically signals a period of consolidation until volatility decreases [5] Group 3 - Rich Privorotsky expressed concerns about systemic risks facing quantitative strategies, recalling the rapid liquidation process during the August 2007 quant crisis [4] - The total exposure of quantitative funds remains at historical highs, largely due to the proliferation of quant-driven strategies, with market volatility in Japan exacerbating the situation [4] - Despite severe drawdowns, quantitative funds have recorded positive returns year-to-date, indicating potential for recovery in the medium to long term, although short-term rebounds in high-volatility stocks may continue to pressure momentum trading [6]