The share price of Cosan S.A. (NYSE:CSAN) dropped by 7.4% between December 17 and December 24, 2025, making it one of the Energy Stocks that Lost the Most This Week. The Brazilian conglomerate operates in fuel distribution through various segments like Raízen, Compass, Moove, Rumo, and Radar.

Cosan (CSAN) has been on a downward trend since December 5, following former Brazilian President Jair Bolsonaro’s endorsement of his son, Senator Flavio Bolsonaro, as a presidential candidate for the upcoming election. This unexpected development led to a plunge in Brazil’s stock index Bovespa by over 4.3% and a 3% drop in the Brazilian Real against the US dollar.

Senator Flavio Bolsonaro’s statements about potentially exiting the presidential race for the right price and efforts to reduce his father’s prison sentence raised skepticism. However, he has since confirmed his candidacy and engaged with business leaders to address economic concerns. Cosan S.A.’s share price has declined by over 34% since the start of 2025 due to Brazil’s political and economic uncertainties.

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Read more at Yahoo Finance: Cosan (CSAN) Continued to Slide This Week. Here is Why