For 43 consecutive trading days this summer -- nearly two months -- U.S. stocks barely budged. The S&P 500’s one-day move never crept above 1 percent during that time, and the S&P 500’s average one-day move was just six basis points over that period.
That streak stopped when the S&P 500 tumbled 2.5 percent on Friday and then bounced back 1.5 percent on Monday.
