Neste Oyj (NTOIF) Stock Analysis & Winston Score

Neste Oyj is a Finnish energy company that refines and sells fuels, with a strong focus on renewable products. Its most important business is making renewable diesel and sustainable aviation fuel (SAF) from waste materials like used cooking oil and animal fat. Airlines, trucking companies, and fuel distributors across Europe and North America are its main customers. Neste earns money by selling refined fuels — both traditional petroleum products and renewable fuels — at a margin above what the raw materials cost. It operates refineries in Finland, the Netherlands, and Singapore, making it one of the world's largest producers of renewable diesel. Its competitive edge comes from its ability to process a wide variety of waste-based feedstocks, which most competitors cannot do as efficiently. The key risk is that feedstock costs — especially used cooking oil — have risen sharply, squeezing margins, and the company must secure enough low-cost waste materials to stay profitable as more rivals enter the renewable fuels market.