Rubber advanced by the most in four months on optimism that China will boost economic growth, improving demand for the commodity used for tires.
October-delivery rubber rose as much as 3.7 percent, the biggest gain since Jan. 17, to 279.9 yen a kilogram ($3,531 a metric ton) on the Tokyo Commodity Exchange, before settling at 278.7 yen. The most-active contract tumbled 15 percent in the past two weeks as Europe’s debt crisis escalated.
