东京工业品交易所黄金期货主力合约收报4,501日圆/克，较上一交易日下跌10日圆/克。       
以下是TOCOM 8月21日黄金期货行情:                                                    
合约     昨收    开盘    最高    最低    收盘    涨跌  成交量                       
17/08月  4,526   4,520   4,520   4,507   4,513   -13     40                         
17/10月  4,517   4,525   4,535   4,497   4,506   -11     61                         
17/12月  4,512   4,521   4,530   4,497   4,503   -9      70                         
18/02月  4,512   4,527   4,532   4,497   4,500   -12     101                        
18/04月  4,512   4,520   4,533   4,495   4,500   -12     2,153                      
18/06月  4,511   4,520   4,533   4,495   4,501   -10     36,315                     
合计                                                     38,740                     
注:1.单位:日圆/克；成交量单位:手。                                                  
2.最小价格变动单位日圆/克。