Enviva, the largest U.S. wood pellet exporter, is preparing to file for bankruptcy within days after a bad bet on future prices of the commodity triggered nine-figure losses, according to people familiar with the matter as quoted by The Wall Street Journal (WSJ). The Bethesda, Md.-based company last month entered into a 30-day grace period that expires on Thursday after missing a $24 million interest payment owed to its bondholders. According to WSJ, Enviva is making preparations to file for bankruptcy as soon as the end of this week, but it might push the filing ...