GENEVA — Shares of Holcim Ltd. jumped Monday after the Swiss-based cement and building materials company announced plans to spin off its North American unit and list its shares in the U.S. Sunday’s announcement of the listing and spinoff comes 15 months after Holcim’s French subsidiary Lafarge pleaded guilty to paying millions of dollars to … Continue reading Shares of building materials maker Holcim jump as it plans to list unit in the U.S.