东京工业品交易所白银期货主力合约收报56.9日圆/克，较上一交易日下跌0.1日圆/克。     
以下是TOCOM 2月21日白银期货行情:                                                  
合约      昨收    开盘    最高    最低    收盘    涨跌   成交量                   
18/02月   57.6    61.5    61.5    58      59.5    1.9     12                      
18/04月   58.4    -       -       -       -       0       -                       
18/06月   57.7    -       -       -       -       0       -                       
18/07月   57.8    -       -       -       -       0       -                       
18/10月   56.9    56.9    56.9    56.9    56.9    0       5                       
18/12月   57      56.8    57.5    56.8    56.9    -0.1    39                      
合计                                                      56                      
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。