SNC-LAVALIN GROUP INC. $47 (www.snclavalin.com) acquired U.K.-based Kentz Corp. for $2.1 billion in August 2014. Kentz sells engineering and construction services to oil and gas firms. The purchase is helping SNC win more contracts in the Middle East. These include a new $800-million contract to build pipelines and a processing facility for a new gas field. This deal is equal to 8% of SNC’s 2015 revenue of $9.6 billion. However, SNC’s stock could suffer if the recent rally in oil prices stalls. In addition, corruption charges related to construction projects in Libya between 2001 and 2011 add to its risk. Hold.