SANEPAR is trading 13.72% lower at BRL 6.98, with Brazil-market repricing after President Luiz Inácio Lula da Silva’s reelection the most likely context. - Reuters reported the result caught markets off guard, as election bets unwound and fiscal concerns returned to focus. - The wastewater-commercialization announcement was dated October 22, not October 26, and does not clearly explain the drop. - Supplied U.S. index figures showed modest gains and do not explain the Brazil-specific move.