This study aims to: 1) To identify the causes of instability in palm oil FFB prices in Baringin Jaya Village, Torgamba District, southern Labuhanbatu Regency. 2) To identify the role of cooperatives in stabilizing palm oil FFB prices from their relation to cooking oil prices in KUD Makmur Jaya Beringin Jaya Village, Torgamba District, southern Labuhanbatu Regency. 3) To analyze the effect of un…