KUALA LUMPUR: Malaysian palm oil futures opened more than 1% higher on Monday, extending gains for a fourth straight session, supported by strength in rival Dalian oils and export data, though weaker Chicago soyoil and crude oil prices capped the rise. The benchmark palm oil contract for June delivery on the Bursa Malaysia Derivatives Exchange gained 76 ringgit, or 1.66%, to 4,648 ringgit a metric ton in early trade.