Long-predicted volatility showed up like a sudden, fast-moving storm in the final week of October. Election jitters, Congressional failure to deliver a Covid-relief package, new lockdowns in Europe, and a rapid rise in US Covid cases gave investors all the reasons they needed to dump stocks. The carnage was severe, with the S&P shedding 5.6%, the Dow dumping 6.5%, and the tech-driven Nasdaq losing 2.4% in just one week. For the month, all three indexes lost 2% or more.