[ABSTRAK
Departmen pembelian telah bergeser dari sekedar kegiatan administrasimenjadi suatu fungsi strategis dalam perusahaan. Kemampuan departmenpembelian dalam membeli barang atau jasa secara strategis memungkinkanperusahaan untuk melakukan efisiensi biaya dan di saat bersamaan akanberkontribusi terhadapa daya saing perusahaan melalui kerjasama strategis denganpenyedia jasa atau barang. Salah satu alat yang umum digunakan dalam menyusunstrategi pembelian ialah dengan menggunakan purchasing portfolio matrix untukmengetahui strategi yang tepat untuk masing-masing komoditas.PT.XYZ ialah salah satu perusahaan minyak dan gas bumi mencoba untukmenyusun strategi pembelian mereka. Untuk membatasi jumlah komoditas yangakan dianalisa, maka dilakukan analisa pengeluaran untuk mendapatkan daftar 25komoditas yang memiliki nilai pembelian terbesar dalam 3 tahun terakhir. Duaparameter digunakan untuk menyusun purchasing portfolio matrix ialah resikoketersediaan dan faktor keuntungan. Berdasarkan kedua parameter, PT.XYZ dapatmenyusun strategi pembelian mereka untuk masing-masing komoditas.

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ABSTRACT
Purchasing has shifted from clearical function into strategic function.Purchasing department ability to purchase material and services in more strategicway will enable company to save a lot of money and at the same time enablecompany to achieve competitive advantage through strategic partnership. The mostcommon tool to define purchasing strategy is by using purchasing portfolio matrixto define which strategy is suitable for specific commodity.PT.XYZ which was one of oil and gas company is trying to develop theirpurchasing strategy. To limit the commodity type, spending analysis is performedto obtain top 25 commodities that contribute to highest purchasing value within lastthree years. Two parameters are used when developing purchasing portfolio matrixare supply risk and profit impact. Based on those parameters, those 25 commoditiesis mapped into purchasing portfolio matrix depend on the value of profit impact andsupply risk for each specific commodity. Based on the matrix result, PT.XYZ candefine better purchasing strategy for each commodity, Purchasing has shifted from clearical function into strategic function.Purchasing department ability to purchase material and services in more strategicway will enable company to save a lot of money and at the same time enablecompany to achieve competitive advantage through strategic partnership. The mostcommon tool to define purchasing strategy is by using purchasing portfolio matrixto define which strategy is suitable for specific commodity.PT.XYZ which was one of oil and gas company is trying to develop theirpurchasing strategy. To limit the commodity type, spending analysis is performedto obtain top 25 commodities that contribute to highest purchasing value within lastthree years. Two parameters are used when developing purchasing portfolio matrixare supply risk and profit impact. Based on those parameters, those 25 commoditiesis mapped into purchasing portfolio matrix depend on the value of profit impact andsupply risk for each specific commodity. Based on the matrix result, PT.XYZ candefine better purchasing strategy for each commodity]