The most-active rubber contract on Shanghai futures exchange for May delivery was up 65 yuan to finish at 24,960 yuan ($4,000) per tonne. The front-month January contract on Singapore's SICOM exchange was last traded at $2.91 per kg, up 2 cents.
"Investors adjusted positions ahead of the long weekend. Prices did not fall below a major support level of 285 yen and that spurred speculative buying," said a Tokyo-based dealer. Tokyo rubber futures exchange will be closed on Monday for a public holiday. Trading will resume on Tuesday. However, dealers said prices failed to rise substantially as concerns about a delay in the solution for the US "fiscal cliff" still weighed on the market.