Historically, most periods of divergence between U.S. and global markets have lasted for about half a year, and have involved emerging markets playing catch up, according to Goldman Sachs analysts. One notable period in which U.S. markets fell and became more in line with the performance of emerging markets was in 2001, after the bursting of the dot-com and tech bubble in the late 1990s, Goldman said. https://www.wsj.com/articles/u-s-st...539522000?mod=hp_lead_pos2&mod=article_inline