东京工业品交易所橡胶期货主力合约收报197.1日圆/千克，较上一交易日下跌0.5日圆/千克。          
以下是TOCOM 10月20日橡胶期货行情:                                                           
合约      昨收    开盘    最高    最低    收盘    涨跌    成交量                            
17/10月   188     185.4   188.9   185.4   186.7   -1.3    13                                
17/11月   192.9   191.1   192.1   190     191.2   -1.7    69                                
17/12月   194.9   192.4   194     191.5   193.4   -1.5    89                                
18/01月   196.3   193.5   196.3   193     195     -1.3    420                               
18/02月   197.2   195     197.5   194.2   196     -1.2    894                               
18/03月   197.6   195.2   198.4   194.8   197.1   -0.5    3,813                             
合计                                                      5,298                             
注:1.单位:日圆/千克；成交量单位:手。                                                        
2.最小价格变动单位日圆/千克。