Neste Oyj (NESTE.HE) Stock Analysis & Winston Score

Neste is a Finnish energy company that refines and sells fuels, with a strong focus on renewable products. Its main products include renewable diesel, sustainable aviation fuel (SAF), and traditional petroleum-based fuels. It sells to airlines, trucking companies, fuel distributors, and industrial customers across Europe, North America, and Asia. Neste makes money by refining raw materials — including waste fats, vegetable oils, and used cooking oil — into cleaner-burning fuels and selling them at a premium over conventional diesel. Headquartered in Espoo, Finland, it is one of the world's largest producers of renewable diesel and SAF, which gives it a meaningful head start over competitors still building similar capacity. The key growth driver is rising demand for SAF as airlines face pressure to cut carbon emissions, but the main risk is that feedstock costs — the raw materials used to make renewable fuels — can be volatile and squeeze profit margins significantly.