The New York-based Omnicom Group Inc. (OMC) is one of the world’s most established advertising and marketing communications holding companies. It provides media planning and buying, branding, public relations, crisis and investor communications, healthcare marketing, and advanced data analytics. The company holds a market cap of approximately $13.4 billion, yet the market has not rewarded that breadth over the past year. Omnicom’s shares have declined 17.2% over the last 52 weeks, while the S&P 500 Index ...