Cury Construtora is trading 40% lower at BRL 19.50, and the cause of the October 26 decline remains unclear. - No verified company announcement or reliable report found in the search explains the move; market data showed a prior close of R$32.50 on October 23. - Recent coverage discussed cautious growth plans and stricter housing-credit checks, but did not link them to the decline. - Major U.S. indexes are higher, so broader-market direction does not explain the move.