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Cosan S.A.

Brazil · B3: CSAN3.SA · Market cap: $2.15B · P/E: loss · P/S: 0.3

Cosan makes ethanol and sugar from sugarcane, moves and sells fuel and natural gas, and sells lubricants.

Cosan is one of Brazil's biggest agribusiness and energy groups. The simplest way to picture it: it takes sugarcane and turns it into two things people need every day — sugar and ethanol — and then it also owns a large piece of the machinery that moves fuel and natural gas around Brazil and sells lubricants to drivers and businesses.

Cosan S.A. (CSAN3.SA) Sugar and ethanol produced by Raízen: line art illustration of a sugarcane stalks beside a bag of sugar and a fuel pump labeled ethanol
Sugar and ethanol
Raízen turns sugarcane into both sugar and ethanol fuel.

Start with the fields. Cosan's Raízen business (a joint venture with Shell) is one of the world's largest sugarcane processors: it grows and crushes cane to make sugar and bioethanol, and burns the leftover cane waste to generate electricity that it sells to the grid. Brazil's cars mostly run on ethanol or a gasoline-ethanol blend, so this is a mainstream fuel business, not a niche green hobby. The other half is distribution. Raízen runs a huge network of fuel stations under the Shell brand, supplies fuel to businesses, and distributes natural gas through Comgás. Cosan also owns Moove, which makes and sells lubricants. These distribution arms are lower-margin but steady: they earn a small cut on enormous volumes of fuel and gas that pass through every day.


What makes Cosan strong is scale and vertical integration — it controls the cane, the mill, the fuel, and the pump. What makes it fragile is debt and Brazil. The group grew by borrowing heavily to buy assets, and high interest rates in Brazil squeeze that debt. Sugar and ethanol prices swing with global markets, and Brazilian fuel prices are partly set by politics, so earnings can lurch. Management has been selling assets and simplifying the group to pay down debt and focus on its core businesses.

Saved answer · last researched 12 Nov 2026