The Shenzhen Component Index on the Shenzhen Stock Exchange closed at 11,688.17 on Tuesday, down 387.63 points, or 3.21 percent, from the previous close. A Share Index: 12,547.23 points, down 416.11 points, or 3.21 percent; B Share Index: 3,696.97 points, down 93.15 points, or 2.46 percent; Total Turnover: 83.93 billion yuan (about 12.29 billion U.S. dollars). 