Brand MarketingOmnicom Posts Strong QuarterBy Noreen O'Leary|April 27, 2004ShareBy Noreen O'Leary|April 27, 2004ShareNEW YORK Omnicom Group on Tuesday said its first-quarter net income surged 17 percent to $135.6 million, up from $115.5 million in the year-ago quarter. The company also said its diluted earnings per share increased 16 percent to 72 cents a share, up from 62 cents a share a year ago. The New York-based holding company said worldwide revenue rose 15 percent to $2.2 billion, compared with $1.9 billion in the 2003 first quarter. U.S. revenue climbed 11 percent to $1.2 billion compared to $1 billion last year, and international revenue jumped 21 percent to $1 billion from $837.6 million, the company said. Adweek Adweek