sao paulomrv engenharia e participacoes sas shares dropped 11 monday after the brazilian builder and real estate developer released operating figures for the third quarter mrv shares fell to 940 reais the equivalent of 178 and are down 12 from the end of last year through fridays close brazils benchmark ibovespa stocks index was up 13 in late morning trading after the close of trading friday mrv said that its net sales declined 27 in the third quarter from a year earlier while unit sales declined 13 in the same period and the average price per unit fell 16 the company also disclosed a major cash burn in the quarter though the outlook is set to improve in coming quarters as mrv raises sales prices and building material costs are more controlled analysts at btg pactual said in a research note