Bloomberg Warren Buffett’s Berkshire Hathaway Inc. said fourth-quarter profit rose 15 percent, fueled by a gain on an investment in Dow Chemical Co. Net income increased to $6.29 billion, or $3,823 a share, from $5.48 billion, or $3,333, a year earlier, the Omaha, Nebraska-based company said in a statement. Operating earnings, which exclude some investment results, were $2,665 a …

  Bloomberg One of Mexico’s largest business groups is working on a bargaining chip ahead of talks to renegotiate the North American Free Trade Agreement: finding alternatives to the US for grain imports. The Consejo Coordinador Empresarial, one of the nation’s top business chambers, is examining countries such as Brazil and Argentina to add new sources for soy, corn and …

  Bloomberg Brazil’s government can’t waive Oi SA’s debt with a local regulator and state-run banks, the communications minister said, denying the phone carrier a lifeline that would have helped it pull out of the biggest bankruptcy in the country’s history. “The govt can’t let go of resources, they are public resources, debt with thepublic administration,” Science and Technology Minister …