NEW YORK-- Interpublic Group’s CMG unit, which houses Weber Shandwick and GolinHarris, grew its organic revenue by 11.5 percent in the first half of the year.

The group’s results, reported today, revealed revenues of $622.4m in the first half of the year. Breaking it down by quarter, CMG’s revenues were $320.5m in Q2 2013, with organic growth up 9.3 percent from the same quarter last year.

Weber CEO Andy Polansky credited CMG agencies Weber, Golin and DeVries for their “strong performance.” He noted the group has experienced strong year-on-year growth, on top of solid sequential growth.

It is understood that public affairs shop Cassidy & Associates has suffered from changing dynamics  and a shifting regulatory environment in Washington DC. Other CMG agencies include Rogers and Cowan, Jack Morton, FutureBrand and Octagon, among other marketing specialist firms. 

Polansky said Weber continues to perform strongly in healthcare, consumer and public affairs with its
tech practice “gaining strength.” Digital and social media also continue to lead Weber’s growth. Regionally, the US, Asia, Brazil and Canada are bright spots with ongoing market softness in Southern Europe.

Overall, IPG revenue grew 2.2 percent on an organic basis over Q2 last year. Revenues for H1 2013 were $3.30b, an organic revenue increase of 2.3 percent year-on-year.