Bloomberg A unit of Petroleos de Venezuela SA (PDVSA) sued the US to recover more than $640 million in excise taxes it says it overpaid on environmentally friendly fuels. PDV Holding Inc, the subsidiary of Venezuela’s national oil company, claims it improperly calculated tax credits and overpaid from 2005 to 2011. The company, which filed the lawsuit in federal court …

Bloomberg Cenovus Energy Inc agreed to buy Husky Energy Inc in an all-stock deal valuing Husky at about C$3.8 billion ($2.9 billion), creating Canada’s third-largest oil and natural gas producer. The deal promises to combine two of the largest players in Canada’s oil sands at a time that valuations have crumbled in the sector. Even before this year’s oil-price slump, …

Bloomberg China’s fast-growing $157 billion market for exchange-traded funds became directly accessible to overseas investors, at least four years since the plan was first hatched. Four so-called “feeder” ETFs began trading in Shenzhen and Hong Kong, the first batch in a project aimed at connecting the two markets. The Shenzhen funds track the Hang Seng China Enterprises Index and the …