Rubber futures hit three-week highs on supply concerns

Tokyo – Natural rubber futures climbed to a three-week high last week on supply concerns, according to Japan Exchange Group (JPX).

Prices ended the week to 27 June firmer across all major exchanges, with what JPX described as “a combination of short covering and light, fresh speculative buying” pushing values higher.

Market sentiment improved following reports of heavy rain and flooding in southwestern China, particularly in Guangxi, Chongqing, and Guangzhou, where local authorities reported six fatalities and over 80,000 evacuations.

Rainfall was also observed in northern Thailand, Vietnam, and the Philippines due to the southwest monsoon, adding to concerns over supply.

In Osaka, Japan, the OSE November 2025 contract closed 5.6% higher week-on-week in generally quiet trading, supported by stronger regional markets and local short covering.

Shanghai rubber futures for September delivery on the OSE were also up 1.0% week-on-week, according to JPX data.

In China, SHFE and INE rubber prices rose by 1.0% and 0.9%, respectively.

In Singapore, SICOM’s active September 2025 contract closed 1.3% higher week-on-week in moderate trading.

JPX said prices rose on short covering and firm market movement in China.