Braskem's stock price saw a significant decline of 11.26%, closing at R$ 9.61 on the Brazilian stock exchange. This decrease was triggered by the revelation that the company might be connected to a substantial R$ 3.6 billion default incurred by another company with Banco do Brasil in the fourth quarter of 2025. Such news had already raised concerns among investors about Braskem's financial stability and its implications on Banco do Brasil's balance sheet.

According to analysts, the news has caused distress in the market as it suggested that Braskem could be responsible for negatively impacting Banco do Brasil's financial performance, thereby raising significant apprehensions regarding Braskem's economic situation. The company, however, has publicly denied any association with the debt mentioned by Banco do Brasil, asserting that it had no outstanding obligations with the bank either then or currently.

As rumors regarding Braskem's potential connection to the default continue to circulate, there is a growing uncertainty in the market surrounding its future performance. Analysts caution that if these claims prove to be true, it might not only affect Braskem's stock further but could also shake investor confidence in the Brazilian financial ecosystem, particularly impacting the stature of Banco do Brasil as a trustworthy banking entity.