NEW YORK: Ketchum said Wednesday that it has bought Raleigh, NC-based independent firm Capstrat in the industry's third significant acquisition of the past week.

The deal will strengthen Ketchum's position in the South, while also adding Capstrat's capabilities in public affairs, healthcare, energy, and technology to the Omnicom agency. Capstrat's creative, social media, and analytics services are also complimentary to Ketchum, the Omnicom firm said in a statement. It added that Capstrat has a “diverse client base across the healthcare, ...