São Martinho S.A. shares rose 55% from November 2025 to September 2026 after InvestingPro’s fair-value model identified the Brazilian sugar and ethanol producer as significantly undervalued.
The model, which synthesizes discounted cash flow, comparable company analysis, and other valuation approaches, estimated an initial upside of 40.76% when it signaled the opportunity on November 26, 2025. At the time, São Martinho’s shares were trading at R$ 13.69, following a 19.12% drop in October 2025 that created an attractive entry point.
By September 1, 2026, São Martinho’s stock had reached R$ 21.21, nearly matching InvestingPro’s fair-value target of R$ 21.20. The company’s market capitalization stood at R$ 6.85 billion, while revenue and EBITDA for the period ending November 26, 2025 were reported at R$ 1.34 billion and R$ 625.95 million, respectively.
São Martinho’s earnings per share also strengthened during the period, climbing 66.7% to R$ 0.4743 from R$ 0.2846 at the time of the initial analysis. InvestingPro’s financial health score for the company was 3.45 out of 5.
The stock’s momentum accelerated in August 2026, when shares advanced 36% in a single month, consolidating the gains projected by the fair-value model.
