东京工业品交易所白银期货主力合约收报57.6日圆/克，较上一交易日上涨0.3圆/克。  
以下是TOCOM 4月18日白银期货行情:                                             
合约      昨收    开盘    最高    最低    收盘    涨跌   成交量              
18/04月   57.3    -       -       -       -       0       -                  
18/05月   57.4    57.5    57.5    57.5    57.5    0.1     3                  
18/06月   57.4    57.4    57.4    57.4    57.4    0       1                  
18/10月   57.4    57.4    57.5    57.4    57.5    0.1     2                  
18/12月   57.3    57.4    57.5    57.4    57.5    0.2     39                 
19/02月   57.3    57      57.6    57      57.6    0.3     41                 
合计                                                      86                 
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。