It should come as no surprise that a week of volatile price action and slumping stocks saw a huge jump in trading volume. Total composite volume for the week was 54,528,267,895 shares, the highest since the week ending August 12, 2011, according to WSJ Market Data Group.
Total composite volume for Friday was more than 11.8 billion shares, making it the second-largest volume day of the year. The day with the most volume this year was last Tuesday, when stocks rebounded some after losses last Friday and Monday. More than 12.04 billion shares changed hands on Tuesday.
Stocks gained ground late Friday, with the S&P 500 index rising about 1.5 percent. But the S&P 500 and Dow Jones Industrial Average each fell by more than 5 percent over the course of the week.